Feng Y, Cheng G, Wang H, et al : The associations between serum 25-hydroxyvitamin D level and the risk of total fracture and hip fracture. Osteoporos Int 28 : 1641-1652, 2017
Cauley JA, Lacroix AZ, Wu L, et al : Serum 25-hydroxyvitamin D concentrations and risk for hip fractures. Ann Intern Med 149 : 242-250, 2008
Tamaki J, Iki M, Sato Y, et al : Total 25-hydroxyvitamin D levels predict fracture risk : results from the 15-year follow-up of the Japanese Population-based Osteoporosis (JPOS) Cohort Study. Osteoporos Int 28 : 1903-1913, 2017