Saptatangtrakun, Y., R. Wattanayingcharoenchai, J. Manonai, and K. Aimjirakul. “Sexual Function in Women Using DMPA Injection and Copper Intrauterine Device”. Thai Journal of Obstetrics and Gynaecology, vol. 24, no. 4, Dec. 2016, pp. 294-01, doi:10.14456/tjog.2016.41.