TAHIR, A. (2016) “Peran polimorfisme gen Collagen type 1 alpha 1 (COL1Î±1) terhadap penurunan densitas mineral tulang vertebra lumbal akseptor KB suntik DMPA”, Indonesian Journal of Obstetrics and Gynecology, 33(3). Available at: https://www.inajog.com/index.php/journal/article/view/200 (Accessed: 2 March 2026).