Upadhyay RS, Fonseca MN. Study of incidence of antiphospholipid antibody syndrome and low vitamin D levels as an etiological factor in recurrent pregnanc loss and their correlation. Int J Reprod Contracept Obstet Gynecol [Internet]. 2016 Dec. 15 [cited 2025 Dec. 4];5(10):3339-42. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/407