Fig. 1
Flowchart of participant selection. Abbreviations: 25(OH)D = 25-hydroxyvitamin D. BMD = bone mineral density. NHANES = National Health and Nutrition
Fig. 1 | BMC Endocrine Disorders
Flowchart of participant selection. Abbreviations: 25(OH)D = 25-hydroxyvitamin D. BMD = bone mineral density. NHANES = National Health and Nutrition