Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W3194372796', 'doi': 'https://doi.org/10.7326/l21-0399', 'title': 'Effectiveness of Adding a Mask Recommendation to Other Public Health Measures', 'display_name': 'Effectiveness of Adding a Mask Recommendation to Other Public Health Measures', 'publication_year': 2021, 'publication_date': '2021-08-01', 'ids': {'openalex': 'https://openalex.org/W3194372796', 'doi': 'https://doi.org/10.7326/l21-0399', 'mag': '3194372796', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/34399078'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.7326/l21-0399', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S119722071', 'display_name': 'Annals of Internal Medicine', 'issn_l': '0003-4819', 'issn': ['0003-4819', '1539-3704'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310316812', 'host_organization_name': 'American College of Physicians', 'host_organization_lineage': ['https://openalex.org/P4310316812'], 'host_organization_lineage_names': ['American College of Physicians'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'letter', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5058530490', 'display_name': 'Carl Llor', 'orcid': 'https://orcid.org/0000-0001-6644-717X'}, 'institutions': [{'id': 'https://openalex.org/I177969490', 'display_name': 'University of Southern Denmark', 'ror': 'https://ror.org/03yrrjy16', 'country_code': 'DK', 'type': 'education', 'lineage': ['https://openalex.org/I177969490']}], 'countries': ['DK'], 'is_corresponding': True, 'raw_author_name': 'Carl Llor', 'raw_affiliation_strings': ['University Institute in Primary Care Research Jordi Gol, Via Roma Health Centre, Barcelona, Spain, and University of Southern Denmark, Odense, Denmark'], 'affiliations': [{'raw_affiliation_string': 'University Institute in Primary Care Research Jordi Gol, Via Roma Health Centre, Barcelona, Spain, and University of Southern Denmark, Odense, Denmark', 'institution_ids': ['https://openalex.org/I177969490']}]}], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5058530490'], 'corresponding_institution_ids': ['https://openalex.org/I177969490'], 'apc_list': None, 'apc_paid': None, 'fwci': None, 'has_fulltext': False, 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.0, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 59, 'max': 68}, 'biblio': {'volume': '174', 'issue': '8', 'first_page': '1194', 'last_page': '1194'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10990', 'display_name': 'Airborne Transmission of Respiratory Viruses', 'score': 0.999, 'subfield': {'id': 'https://openalex.org/subfields/2740', 'display_name': 'Pulmonary and Respiratory Medicine'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10990', 'display_name': 'Airborne Transmission of Respiratory Viruses', 'score': 0.999, 'subfield': {'id': 'https://openalex.org/subfields/2740', 'display_name': 'Pulmonary and Respiratory Medicine'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10168', 'display_name': 'Impact of COVID-19 on Mental Health', 'score': 0.979, 'subfield': {'id': 'https://openalex.org/subfields/3203', 'display_name': 'Clinical Psychology'}, 'field': {'id': 'https://openalex.org/fields/32', 'display_name': 'Psychology'}, 'domain': {'id': 'https://openalex.org/domains/2', 'display_name': 'Social Sciences'}}, {'id': 'https://openalex.org/T10410', 'display_name': 'Modeling the Dynamics of COVID-19 Pandemic', 'score': 0.9617, 'subfield': {'id': 'https://openalex.org/subfields/2611', 'display_name': 'Modeling and Simulation'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/trial-registration', 'display_name': 'Trial registration', 'score': 0.6299818}, {'id': 'https://openalex.org/keywords/social-distance', 'display_name': 'Social distance', 'score': 0.6051867}, {'id': 'https://openalex.org/keywords/public-health-interventions', 'display_name': 'Public Health Interventions', 'score': 0.513402}], 'concepts': [{'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.77119356}, {'id': 'https://openalex.org/C2778653282', 'wikidata': 'https://www.wikidata.org/wiki/Q60752967', 'display_name': 'Trial registration', 'level': 3, 'score': 0.6299818}, {'id': 'https://openalex.org/C27415008', 'wikidata': 'https://www.wikidata.org/wiki/Q7256382', 'display_name': 'Psychological intervention', 'level': 2, 'score': 0.60698724}, {'id': 'https://openalex.org/C172656115', 'wikidata': 'https://www.wikidata.org/wiki/Q2142613', 'display_name': 'Social distance', 'level': 5, 'score': 0.6051867}, {'id': 'https://openalex.org/C168563851', 'wikidata': 'https://www.wikidata.org/wiki/Q1436668', 'display_name': 'Randomized controlled trial', 'level': 2, 'score': 0.59327704}, {'id': 'https://openalex.org/C138816342', 'wikidata': 'https://www.wikidata.org/wiki/Q189603', 'display_name': 'Public health', 'level': 2, 'score': 0.5680536}, {'id': 'https://openalex.org/C2994107952', 'wikidata': 'https://www.wikidata.org/wiki/Q1814351', 'display_name': 'Public health interventions', 'level': 3, 'score': 0.46389413}, {'id': 'https://openalex.org/C160735492', 'wikidata': 'https://www.wikidata.org/wiki/Q31207', 'display_name': 'Health care', 'level': 2, 'score': 0.45805892}, {'id': 'https://openalex.org/C535046627', 'wikidata': 'https://www.wikidata.org/wiki/Q30612', 'display_name': 'Clinical trial', 'level': 2, 'score': 0.4544769}, {'id': 'https://openalex.org/C2777402240', 'wikidata': 'https://www.wikidata.org/wiki/Q6783436', 'display_name': 'Masking (illustration)', 'level': 2, 'score': 0.433658}, {'id': 'https://openalex.org/C512399662', 'wikidata': 'https://www.wikidata.org/wiki/Q3505712', 'display_name': 'Family medicine', 'level': 1, 'score': 0.42381594}, {'id': 'https://openalex.org/C2776451394', 'wikidata': 'https://www.wikidata.org/wiki/Q15754594', 'display_name': 'Journal of Public Health', 'level': 5, 'score': 0.418162}, {'id': 'https://openalex.org/C3008058167', 'wikidata': 'https://www.wikidata.org/wiki/Q84263196', 'display_name': 'Coronavirus disease 2019 (COVID-19)', 'level': 4, 'score': 0.4018469}, {'id': 'https://openalex.org/C159110408', 'wikidata': 'https://www.wikidata.org/wiki/Q121176', 'display_name': 'Nursing', 'level': 1, 'score': 0.25384912}, {'id': 'https://openalex.org/C185618831', 'wikidata': 'https://www.wikidata.org/wiki/Q1851928', 'display_name': 'Health promotion', 'level': 3, 'score': 0.23026916}, {'id': 'https://openalex.org/C2779134260', 'wikidata': 'https://www.wikidata.org/wiki/Q12136', 'display_name': 'Disease', 'level': 2, 'score': 0.1467117}, {'id': 'https://openalex.org/C193395930', 'wikidata': 'https://www.wikidata.org/wiki/Q3247219', 'display_name': 'International health', 'level': 4, 'score': 0.1150406}, {'id': 'https://openalex.org/C141071460', 'wikidata': 'https://www.wikidata.org/wiki/Q40821', 'display_name': 'Surgery', 'level': 1, 'score': 0.098819286}, {'id': 'https://openalex.org/C142724271', 'wikidata': 'https://www.wikidata.org/wiki/Q7208', 'display_name': 'Pathology', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C524204448', 'wikidata': 'https://www.wikidata.org/wiki/Q788926', 'display_name': 'Infectious disease (medical specialty)', 'level': 3, 'score': 0.0}, {'id': 'https://openalex.org/C162324750', 'wikidata': 'https://www.wikidata.org/wiki/Q8134', 'display_name': 'Economics', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C142362112', 'wikidata': 'https://www.wikidata.org/wiki/Q735', 'display_name': 'Art', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C153349607', 'wikidata': 'https://www.wikidata.org/wiki/Q36649', 'display_name': 'Visual arts', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C50522688', 'wikidata': 'https://www.wikidata.org/wiki/Q189833', 'display_name': 'Economic growth', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D000086382', 'descriptor_name': 'COVID-19', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D011634', 'descriptor_name': 'Public Health', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008397', 'descriptor_name': 'Masks', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.7326/l21-0399', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S119722071', 'display_name': 'Annals of Internal Medicine', 'issn_l': '0003-4819', 'issn': ['0003-4819', '1539-3704'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310316812', 'host_organization_name': 'American College of Physicians', 'host_organization_lineage': ['https://openalex.org/P4310316812'], 'host_organization_lineage_names': ['American College of Physicians'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/34399078', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'display_name': 'No poverty', 'score': 0.71, 'id': 'https://metadata.un.org/sdg/1'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 2, 'referenced_works': ['https://openalex.org/W2131854704', 'https://openalex.org/W3099589848'], 'related_works': ['https://openalex.org/W4376129768', 'https://openalex.org/W4321326924', 'https://openalex.org/W4308651111', 'https://openalex.org/W4287761470', 'https://openalex.org/W4248498787', 'https://openalex.org/W3142156237', 'https://openalex.org/W3136122565', 'https://openalex.org/W3094130624', 'https://openalex.org/W3035391215', 'https://openalex.org/W3021474929'], 'abstract_inverted_index': {'LettersAugust': [0], '2021Effectiveness': [1], 'of': [2, 33, 85, 96, 98, 116, 150, 164, 189, 211, 237, 298, 369, 404, 441, 456, 553, 566, 597, 610, 640, 675], 'Adding': [3, 457, 554, 567, 598, 611, 641], 'a': [4, 147, 158, 161, 358, 371, 458, 555, 568, 599, 612, 642], 'Mask': [5, 459, 472, 556, 569, 600, 613, 643], 'Recommendation': [6, 460, 557, 570, 601, 614, 644], 'to': [7, 45, 91, 108, 180, 252, 266, 276, 290, 374, 379, 416, 461, 466, 558, 571, 602, 615, 645], 'Other': [8, 462, 559, 572, 603, 616, 646], 'Public': [9, 463, 560, 573, 604, 617, 647], 'Health': [10, 27, 435, 464, 561, 574, 605, 618, 648], 'MeasuresFREECarl': [11], 'Llor,': [12, 15], 'MD,': [13, 16], 'PhDCarl': [14], 'PhDUniversity': [17], 'Institute': [18, 426], 'in': [19, 76, 130, 146, 157, 173, 198, 219, 224, 246, 258, 295, 305, 322, 338, 383, 427, 470], 'Primary': [20, 428], 'Care': [21, 429], 'Research': [22, 430], 'Jordi': [23, 431], 'Gol,': [24, 432], 'Via': [25, 433], 'Roma': [26, 434], 'Centre,': [28, 436], 'Barcelona,': [29, 437], 'Spain,': [30, 438], 'and': [31, 39, 54, 94, 135, 166, 170, 184, 206, 227, 233, 272, 279, 332, 422, 439, 549, 592, 636], 'University': [32, 425, 440], 'Southern': [34, 199, 259, 442], 'Denmark,': [35, 443], 'Odense,': [36, 444], 'DenmarkAuthor,': [37], 'Article,': [38, 421], 'Disclosure': [40, 423], 'Informationhttps://doi.org/10.7326/L21-0399': [41], 'SectionsAboutVisual': [42], 'AbstractPDF': [43], 'ToolsAdd': [44], 'favoritesDownload': [46], 'CitationsTrack': [47], 'CitationsPermissions': [48], 'ShareFacebookTwitterLinkedInRedditEmail': [49], 'TO': [50], 'THE': [51], 'EDITOR:': [52], 'Bundgaard': [53, 331, 360, 362, 475, 479, 577, 590], "colleagues'": [55, 333], 'randomized': [56, 121, 388], 'controlled': [57, 122, 389], 'trial': [58, 123, 145, 154, 334], '(1)': [59], 'showed': [60], 'that': [61, 244, 323, 349], 'face': [62], 'mask': [63, 77, 92, 106, 320, 372, 385], 'use': [64], 'supplementing': [65], 'other': [66, 111, 175, 208, 375], 'public': [67, 182, 274, 376], 'health': [68, 248, 377, 405], 'strategies': [69], 'did': [70], 'not': [71], 'significantly': [72], 'reduce': [73], 'SARS-CoV-2': [74, 381, 468], 'infection': [75, 315, 382], 'wearers.': [78, 386], 'The': [79, 120], 'authors': [80, 139, 348], 'themselves': [81], 'mention': [82], 'several': [83], 'limitations': [84], 'their': [86, 268], 'study,': [87], 'mainly': [88], 'low': [89], 'adherence': [90], 'wearing': [93], 'lack': [95], 'assessment': [97], 'whether': [99, 310], 'masks': [100], 'could': [101, 193], 'decrease': [102], 'disease': [103], 'transmission': [104], 'from': [105, 270, 303, 314], 'wearers': [107, 321], 'others.': [109], 'However,': [110], 'variables': [112], 'may': [113], 'make': [114], 'generalization': [115], 'these': [117], 'results': [118], 'difficult.': [119], 'design': [124], 'is': [125], 'irrefutably': [126], 'the': [127, 138, 203, 212, 238, 299, 311, 328, 347], 'best': [128], 'method': [129], 'clinical': [131], 'research': [132], 'addressing': [133], 'interventions,': [134], 'we': [136], 'applaud': [137], 'for': [140], 'doing': [141], 'such': [142, 215, 357], 'an': [143, 196], 'important': [144], 'short': [148], 'period': [149], 'time.': [151], 'Still,': [152], 'this': [153], 'was': [155], 'done': [156, 337], 'country': [159, 324], 'with': [160, 221, 285, 316, 341, 346], 'low-moderate': [162], 'incidence': [163], 'COVID-19': [165], 'during': [167], 'lockdown': [168], '(April': [169], 'May': [171], '2020).Persons': [172], 'many': [174, 207, 296], 'areas': [176, 297, 340], 'are': [177, 235, 249, 263, 353], 'less': [178, 264], 'likely': [179, 265], 'avoid': [181], 'places': [183], 'stay': [185], 'home': [186], 'than': [187], 'residents': [188], 'Denmark.': [190, 306], 'Social': [191, 402], 'distancing': [192], 'qualify': [194], 'as': [195], 'oxymoron': [197], 'Europe,': [200, 260], 'South': [201], 'America,': [202], 'United': [204], 'States,': [205], 'crowded': [209, 225, 277, 339], 'parts': [210], 'world.': [213], 'In': [214, 415], 'places,': [216], 'walking': [217], 'arm': [218, 220], 'friends;': [222], 'eating': [223], 'restaurants': [226], 'terraces;': [228], 'or': [229], 'kissing': [230], 'relatives,': [231], 'neighbors,': [232], 'friends': [234], 'part': [236], 'culture.': [239], 'Solid': [240], 'evidence': [241], 'now': [242], 'shows': [243], 'persons': [245], 'poor': [247], 'more': [250, 291, 350], 'susceptible': [251], 'serious': [253], 'illnesses': [254], '(2).': [255], 'For': [256], 'example,': [257], 'low-paid': [261], 'employees': [262], 'do': [267], 'jobs': [269], 'home,': [271], 'taking': [273], 'transport': [275], 'workplaces': [278], 'families': [280], 'being': [281], 'pushed': [282], 'into': [283], 'housing': [284], 'insufficient': [286], 'space': [287], 'might': [288], 'lead': [289], 'contagions.The': [292], '"real-life"': [293], 'conditions': [294], 'world': [300], 'differ': [301], 'substantially': [302], 'those': [304], 'We': [307, 344], 'should': [308], 'ask': [309], 'modest': [312], 'protection': [313], 'SARS-Cov-2': [317], 'experienced': [318], 'by': [319, 672], 'would': [325], 'have': [326], 'been': [327, 336], 'same': [329], 'if': [330], 'had': [335], 'no': [342], 'curfew.': [343], 'agree': [345], 'well-conducted': [351], 'studies': [352], 'needed': [354], 'before': [355], 'drawing': [356], 'conclusion.References1.': [359], 'H,': [361], 'JS,': [363], 'Raaschou-Pedersen': [364, 484, 586], 'DET,': [365], 'et': [366], 'al.': [367], 'Effectiveness': [368, 552, 565, 596, 609, 639], 'adding': [370], 'recommendation': [373], 'measures': [378], 'prevent': [380], 'Danish': [384, 471], 'A': [387, 418], 'trial.': [390], 'Ann': [391], 'Intern': [392], 'Med.': [393], '2021;174:335-43.': [394], '[PMID:': [395, 409], '33205991].': [396], 'doi:10.7326/M20-6817': [397], 'LinkGoogle': [398], 'Scholar2.': [399], 'Marmot': [400], 'M.': [401, 498], 'determinants': [403], 'inequalities.': [406], 'Lancet.': [407], '2005;365:1099-104.': [408], '15781105]': [410], 'CrossrefMedlineGoogle': [411], 'Scholar': [412], 'Comments0': [413], 'CommentsSign': [414], 'Submit': [417], 'Comment': [419], 'Author,': [420], 'InformationAffiliations:': [424], 'DenmarkDisclosures:': [445], 'Disclosures': [446], 'can': [447], 'be': [448], 'viewed': [449], 'at': [450], 'www.acponline.org/authors/icmje/ConflictOfInterestForms.do?msNum=L21-0399.': [451], 'PreviousarticleNextarticle': [452], 'Advertisement': [453], 'FiguresReferencesRelatedDetailsSee': [454], 'AlsoEffectiveness': [455], 'Measures': [465, 562, 575, 606, 619, 649], 'Prevent': [467], 'Infection': [469], 'Wearers': [473], 'Henning': [474, 576], ',': [476, 480, 485, 489, 492, 496, 500, 504, 508, 512, 515, 518, 522, 525, 529, 533, 536, 539, 542, 545, 548, 578, 582, 587, 591, 623, 627, 631, 635], 'Johan': [477, 588], 'Skov': [478, 589], 'Daniel': [481, 583], 'Emil': [482, 584], 'Tadeusz': [483, 585], 'Christian': [486, 546], 'von': [487], 'Buchwald': [488], 'Tobias': [490], 'Todsen': [491], 'Jakob': [493], 'Boesgaard': [494], 'Norsk': [495], 'Mia': [497], 'Pries-Heje': [499], 'Christoffer': [501], 'Rasmus': [502, 516], 'Vissing': [503], 'Pernille': [505], 'B.': [506], 'Nielsen': [507], 'Ulrik': [509], 'C.': [510], 'Winsløw': [511], 'Kamille': [513], 'Fogh': [514], 'Hasselbalch': [517], 'Jonas': [519], 'H.': [520], 'Kristensen': [521], 'Anna': [523, 579], 'Ringgaard': [524, 581], 'Mikkel': [526], 'Porsborg': [527], 'Andersen': [528], 'Nicole': [530], 'Bakkegård': [531], 'Goecke': [532], 'Ramona': [534], 'Trebbien': [535], 'Kerstin': [537], 'Skovgaard': [538], 'Thomas': [540], 'Benfield': [541], 'Henrik': [543], 'Ullum': [544], 'Torp-Pedersen': [547], 'Kasper': [550, 593], 'Iversen': [551, 595], 'Janet': [563], 'Rand': [564], 'K.': [580, 594], 'Hans': [607], 'Gaines': [608], 'Matthew': [620], 'A.': [621], 'Spinelli': [622], 'David': [624], 'V.': [625], 'Glidden': [626], 'Efstathios': [628], 'D.': [629], 'Gennatas': [630], 'George': [632], 'W.': [633], 'Rutherford': [634], 'Monica': [637], 'Gandhi': [638], 'Brendan': [650], 'Moran': [651], 'Metrics': [652], 'August': [653, 661, 665], '2021Volume': [654], '174,': [655], 'Issue': [656, 663], '8Page:': [657], '1194-1194': [658], 'ePublished:': [659], '17': [660], '2021': [662, 666, 671], 'Published:': [664], 'Copyright': [667], '&': [668], 'PermissionsCopyright': [669], '©': [670], 'American': [673], 'College': [674], 'Physicians.': [676], 'All': [677], 'Rights': [678], 'Reserved.PDF': [679], 'downloadLoading': [680], '...': [681]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W3194372796', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}], 'updated_date': '2024-09-12T04:41:42.039074', 'created_date': '2021-08-30'}