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'assess': [3], 'vitamin': [4, 16, 20, 27, 44, 226, 240, 280], 'D': [5, 17, 21, 28, 55, 227, 241, 281], 'status': [6], 'and': [7, 14, 23, 51, 53, 59, 74, 112, 151, 170, 194, 217, 252, 273], 'the': [8, 156, 276, 284], 'influences': [9], 'of': [10, 42, 128, 155, 250], 'race,': [11], 'sun': [12, 46, 146], 'exposure': [13, 220], 'dietary': [15, 43], 'intake': [18], 'on': [19, 271], 'levels,': [22], 'to': [24, 94, 196, 234, 244, 263, 274], 'evaluate': [25, 264], 'two': [26], 'repletion': [29, 242, 282], 'regimens': [30, 267], 'in': [31, 61, 139, 158, 173, 185, 256, 283], 'extremely': [32, 285], 'obese': [33, 63, 207, 286], 'patients': [34, 237], 'awaiting': [35], 'bariatric': [36, 245], 'surgery.': [37, 246], 'Methods': [38], 'A': [39], 'cross‐sectional': [40], 'analysis': [41], 'D,': [45], 'exposure,': [47, 147], 'PTH': [48, 152], '[intact': [49], '(iPTH)': [50], 'PTH(1‐84)]': [52], '25‐hydroxyvitamin': [54], '(25OHD;': [56], 'differentiated': [57], '25OHD2': [58], '25OHD3)': [60], '56': [62], '[body': [64], 'mass': [65], 'index': [66], '(BMI)': [67], '>': [68], '35': [69], 'kg/m': [70, 130], '2': [71, 131], ']': [72], 'men': [73], 'women': [75], '(age': [76], '20–64': [77], 'years).': [78], 'In': [79, 205], 'a': [80, 135], 'pilot': [81], 'clinical': [82], 'trial,': [83], '27': [84], 'subjects': [85, 186], 'with': [86, 116, 134, 188], '25OHD': [87, 104, 140, 159, 165], 'levels': [88], '<': [89, 123, 143, 162, 179, 192, 202], '62': [90], 'nmol/l': [91, 137], 'were': [92], 'randomized': [93], 'receive': [95], 'ergocalciferol': [96, 199, 251], 'or': [97], 'cholecalciferol': [98, 189, 253], 'for': [99, 225, 279], '8': [100, 171], 'weeks.': [101], 'Results': [102], 'Serum': [103, 164], 'was': [105, 113, 132], 'low': [106], '(mean': [107], '45': [108], '±': [109], '22': [110], 'nmol/l)': [111], 'inversely': [114], 'associated': [115, 133], 'BMI': [117, 126, 216], '(': [118, 141, 160, 177, 190, 200], 'r': [119], '=': [120], '−0·36,': [121], 'P': [122, 142, 161, 178, 191, 201], '0·01).': [124, 144], 'Each': [125], 'increase': [127], '1': [129], '1·3': [136], 'decrease': [138, 197], 'BMI,': [145], 'African': [148, 212], 'American': [149], 'race': [150], 'predicted': [153], '40%': [154], 'variance': [157], '0·0001).': [163], 'significantly': [166, 184], 'increased': [167], 'at': [168, 222], '4': [169], 'weeks': [172], 'both': [174], 'treatment': [175], 'groups': [176], '0·001),': [180], 'whereas': [181], 'PTH(1‐84)': [182], 'declined': [183], 'treated': [187], '0·007)': [193], 'tended': [195], 'following': [198], '0·09).': [203], 'Conclusions': [204], 'severely': [206], 'individuals,': [208], 'those': [209], 'who': [210, 238], 'are': [211, 221, 254], 'American,': [213], 'have': [214, 268], 'higher': [215], 'limited': [218], 'sunlight': [219], 'greatest': [223], 'risk': [224], 'insufficiency.': [228], 'These': [229], 'demographic': [230], 'factors': [231], 'can': [232], 'help': [233], 'identify': [235], 'at‐risk': [236], 'require': [239], 'prior': [243], 'Commonly': [247], 'prescribed': [248], 'doses': [249], 'effective': [255], 'raising': [257], '25OHD.': [258], 'Further': [259], 'investigation': [260], 'is': [261], 'needed': [262], 'whether': [265], 'these': [266], 'differential': [269], 'effects': [270], 'PTH,': [272], 'determine': [275], 'optimal': [277], 'regimen': [278], 'patient.': [287]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2121775518', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}, {'year': 2023, 'cited_by_count': 3}, {'year': 2022, 'cited_by_count': 4}, {'year': 2021, 'cited_by_count': 6}, {'year': 2020, 'cited_by_count': 6}, {'year': 2019, 'cited_by_count': 6}, {'year': 2018, 'cited_by_count': 9}, {'year': 2017, 'cited_by_count': 6}, {'year': 2016, 'cited_by_count': 10}, {'year': 2015, 'cited_by_count': 8}, {'year': 2014, 'cited_by_count': 14}, {'year': 2013, 'cited_by_count': 7}, {'year': 2012, 'cited_by_count': 7}], 'updated_date': '2024-09-17T16:25:33.689413', 'created_date': '2016-06-24'}