Güneş Yavuzer, et al. “THE CLINICAL AND METABOLIC EFFECTS OF CALCITRIOL IN THE TREATMENT OF POSTMENOPAUSAL OSTEOPOROSIS”. Archives of Rheumatology, vol. 15, no. 2, June 2000, pp. 093-8, http://anadolupsikiyatri.net/index.php/pub/article/view/13.