Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1985216999', 'doi': 'https://doi.org/10.1002/(sici)1096-9926(199702)55:2<132::aid-tera2>3.0.co;2-5', 'title': 'Periconceptional intake of vitamin A among women and risk of neural tube defect-affected pregnancies', 'display_name': 'Periconceptional intake of vitamin A among women and risk of neural tube defect-affected pregnancies', 'publication_year': 1997, 'publication_date': '1997-02-01', 'ids': {'openalex': 'https://openalex.org/W1985216999', 'doi': 'https://doi.org/10.1002/(sici)1096-9926(199702)55:2<132::aid-tera2>3.0.co;2-5', 'mag': '1985216999', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/9143093'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/(sici)1096-9926(199702)55:2<132::aid-tera2>3.0.co;2-5', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S23975315', 'display_name': 'Birth Defects Research', 'issn_l': '2472-1727', 'issn': ['2472-1727'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', '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/A5033044395', 'display_name': 'Gary M. Shaw', 'orcid': 'https://orcid.org/0000-0001-7438-4914'}, 'institutions': [], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Gary M. Shaw', 'raw_affiliation_strings': ['California Birth Defects Monitoring Program, Emeryville, California 94608'], 'affiliations': [{'raw_affiliation_string': 'California Birth Defects Monitoring Program, Emeryville, California 94608', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5080707093', 'display_name': 'Ellen M. Velie', 'orcid': 'https://orcid.org/0000-0001-6865-9715'}, 'institutions': [], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Ellen M. Velie', 'raw_affiliation_strings': ['California Birth Defects Monitoring Program, Emeryville, California 94608'], 'affiliations': [{'raw_affiliation_string': 'California Birth Defects Monitoring Program, Emeryville, California 94608', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5050017923', 'display_name': 'Donna Schaffer', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I1343052199', 'display_name': 'Kaiser Permanente', 'ror': 'https://ror.org/00t60zh31', 'country_code': 'US', 'type': 'nonprofit', 'lineage': ['https://openalex.org/I1343052199']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Donna Schaffer', 'raw_affiliation_strings': ['Kaiser Permanente, Oakland, California 94609'], 'affiliations': [{'raw_affiliation_string': 'Kaiser Permanente, Oakland, California 94609', 'institution_ids': ['https://openalex.org/I1343052199']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5109872516', 'display_name': 'Edward J. Lammer', 'orcid': None}, 'institutions': [], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Edward J. Lammer', 'raw_affiliation_strings': ["Children's Hospital Oakland, Oakland, California 94609"], 'affiliations': [{'raw_affiliation_string': "Children's Hospital Oakland, Oakland, California 94609", 'institution_ids': []}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 3350, 'currency': 'USD', 'value_usd': 3350, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.405, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 12, 'citation_normalized_percentile': {'value': 0.589888, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 79, 'max': 80}, 'biblio': {'volume': '55', 'issue': '2', 'first_page': '132', 'last_page': '133'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10499', 'display_name': 'Folate and B Vitamins Research', 'score': 0.9987, 'subfield': {'id': 'https://openalex.org/subfields/2745', 'display_name': 'Rheumatology'}, '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/T10499', 'display_name': 'Folate and B Vitamins Research', 'score': 0.9987, 'subfield': {'id': 'https://openalex.org/subfields/2745', 'display_name': 'Rheumatology'}, '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/T10445', 'display_name': 'Antioxidant Activity and Oxidative Stress', 'score': 0.969, 'subfield': {'id': 'https://openalex.org/subfields/2704', 'display_name': 'Biochemistry'}, '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/T10290', 'display_name': 'Pregnancy and preeclampsia studies', 'score': 0.9601, 'subfield': {'id': 'https://openalex.org/subfields/2729', 'display_name': 'Obstetrics and Gynecology'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [], 'concepts': [{'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.43308422}, {'id': 'https://openalex.org/C74909509', 'wikidata': 'https://www.wikidata.org/wiki/Q10387', 'display_name': 'Gerontology', 'level': 1, 'score': 0.41238755}, {'id': 'https://openalex.org/C161191863', 'wikidata': 'https://www.wikidata.org/wiki/Q199655', 'display_name': 'Library science', 'level': 1, 'score': 0.40206283}, {'id': 'https://openalex.org/C15744967', 'wikidata': 'https://www.wikidata.org/wiki/Q9418', 'display_name': 'Psychology', 'level': 0, 'score': 0.3242118}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.11696699}], 'mesh': [{'descriptor_ui': 'D009436', 'descriptor_name': 'Neural Tube Defects', 'qualifier_ui': 'Q000209', 'qualifier_name': 'etiology', 'is_major_topic': True}, {'descriptor_ui': 'D014801', 'descriptor_name': 'Vitamin A', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': True}, {'descriptor_ui': 'D014801', 'descriptor_name': 'Vitamin A', 'qualifier_ui': 'Q000009', 'qualifier_name': 'adverse effects', 'is_major_topic': True}, {'descriptor_ui': 'D002140', 'descriptor_name': 'California', 'qualifier_ui': 'Q000453', 'qualifier_name': 'epidemiology', 'is_major_topic': False}, {'descriptor_ui': 'D002140', 'descriptor_name': 'California', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D016022', 'descriptor_name': 'Case-Control Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005306', 'descriptor_name': 'Fertilization', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007231', 'descriptor_name': 'Infant, Newborn', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D009436', 'descriptor_name': 'Neural Tube Defects', 'qualifier_ui': 'Q000453', 'qualifier_name': 'epidemiology', 'is_major_topic': False}, {'descriptor_ui': 'D009436', 'descriptor_name': 'Neural Tube Defects', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D016017', 'descriptor_name': 'Odds Ratio', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011247', 'descriptor_name': 'Pregnancy', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012307', 'descriptor_name': 'Risk Factors', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014801', 'descriptor_name': 'Vitamin A', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/(sici)1096-9926(199702)55:2<132::aid-tera2>3.0.co;2-5', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S23975315', 'display_name': 'Birth Defects Research', 'issn_l': '2472-1727', 'issn': ['2472-1727'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], '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/9143093', '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': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 3, 'referenced_works': ['https://openalex.org/W1987438923', 'https://openalex.org/W2106619928', 'https://openalex.org/W2334286404'], 'related_works': ['https://openalex.org/W4389568370', 'https://openalex.org/W3108674512', 'https://openalex.org/W3032375762', 'https://openalex.org/W3031052312', 'https://openalex.org/W2748952813', 'https://openalex.org/W2586801360', 'https://openalex.org/W2080531066', 'https://openalex.org/W1995515455', 'https://openalex.org/W1506200166', 'https://openalex.org/W1489783725'], 'abstract_inverted_index': {'TeratologyVolume': [0], '55,': [1], 'Issue': [2], '2': [3], 'p.': [4], '132-133': [5, 277], 'Research': [6], 'Article': [7], 'Periconceptional': [8], 'intake': [9], 'of': [10, 17, 216, 226, 239, 250], 'vitamin': [11], 'A': [12], 'among': [13], 'women': [14], 'and': [15, 214, 218, 230, 237, 256], 'risk': [16], 'neural': [18], 'tube': [19], 'defect-affected': [20], 'pregnancies': [21], 'Gary': [22, 27, 106, 111], 'M.': [23, 28, 56, 59, 107, 112, 140, 143], 'Shaw,': [24, 108], 'Corresponding': [25, 109], 'Author': [26, 110], 'Shaw': [29, 113], 'California': [30, 36, 61, 67, 81, 98, 114, 120, 145, 151, 165, 182], 'Birth': [31, 38, 62, 115, 122, 146], 'Defects': [32, 39, 63, 116, 123, 147], 'Monitoring': [33, 40, 64, 117, 124, 148], 'Program,': [34, 41, 65, 118, 125, 149], 'Emeryville,': [35, 47, 66, 119, 131, 150], '94608California': [37, 121], '1900': [42, 126], 'Powell': [43, 127], 'St.': [44, 128], 'Suite': [45, 129], '1050,': [46, 130], 'CA': [48, 132], '94608Search': [49, 68, 133, 152], 'for': [50, 69, 83, 100, 134, 153, 167, 184, 270], 'more': [51, 70, 84, 101, 135, 154, 168, 185], 'papers': [52, 71, 85, 102, 136, 155, 169, 186], 'by': [53, 72, 86, 103, 137, 156, 170, 187], 'this': [54, 73, 87, 104, 138, 157, 171, 188, 251, 271], 'authorEllen': [55, 139], 'Velie,': [57, 141], 'Ellen': [58, 142], 'Velie': [60, 144], 'authorDonna': [74, 158], 'Schaffer,': [75, 159], 'Donna': [76, 160], 'Schaffer': [77, 161], 'Kaiser': [78, 162], 'Permanente,': [79, 163], 'Oakland,': [80, 96, 97, 164, 180, 181], '94609Search': [82, 99, 166, 183], 'authorEdward': [88, 172], 'J.': [89, 92, 173, 176], 'Lammer,': [90, 174], 'Edward': [91, 175], 'Lammer': [93, 177], "Children's": [94, 178], 'Hospital': [95, 179], 'author': [105, 189], 'First': [190], 'published:': [191], '07': [192], 'December': [193], '1998': [194], 'https://doi.org/10.1002/(SICI)1096-9926(199702)55:2<132::AID-TERA2>3.0.CO;2-5Citations:': [195], '10AboutPDF': [196], 'ToolsRequest': [197], 'permissionExport': [198], 'citationAdd': [199], 'to': [200, 222, 245], 'favoritesTrack': [201], 'citation': [202], 'ShareShare': [203], 'Give': [204], 'accessShare': [205, 208], 'full': [206], 'text': [207], 'full-text': [209, 224, 248], 'accessPlease': [210], 'review': [211], 'our': [212], 'Terms': [213, 236], 'Conditions': [215, 238], 'Use': [217], 'check': [219], 'box': [220], 'below': [221, 244], 'share': [223, 246], 'version': [225, 249], 'article.I': [227], 'have': [228], 'read': [229], 'accept': [231], 'the': [232, 242], 'Wiley': [233], 'Online': [234], 'Library': [235], 'UseShareable': [240], 'LinkUse': [241], 'link': [243], 'a': [247, 262], 'article': [252], 'with': [253], 'your': [254], 'friends': [255], 'colleagues.': [257], 'Learn': [258], 'more.Copy': [259], 'URL': [260], 'Share': [261], 'linkShare': [263], 'onFacebookTwitterLinked': [264], 'InRedditWechat': [265], 'No': [266], 'abstract': [267], 'is': [268], 'available': [269], 'article.Citing': [272], 'Literature': [273], 'Volume55,': [274], 'Issue2February': [275], '1997Pages': [276], 'RelatedInformation': [278]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1985216999', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 1}], 'updated_date': '2024-12-08T20:44:39.606836', 'created_date': '2016-06-24'}