N. Rojanasrirat, S. . . Suthutvoravut, P. Yanatatsaneejit, and A. Wongkularb, “Association Between Vitamin D Levels and Vitamin D Receptor FokI Polymorphism in Thai Postmenopausal Women With Osteoporosis”, Rama Med J, vol. 44, no. 1, pp. 1–10, Mar. 2021.