Yeung CY, Lee HC, Chan WT, Jiang CB, Chang SW, Chuang CK. Vertical transmission of hepatitis C virus: Current knowledge and perspectives. World Journal of Hepatology. 2014;6(9):643.

Yu JH, Kim MJ, Cho H, Liu HJ, Han SJ, Ahn TG. Breast diseases during pregnancy and lactation. Obstetrics & Gynecology Science. 2013;1;56(3):143-59.

Academy of Breastfeeding Medicine Protocol Committee. ABM clinical protocol# 20: Engorgement. 2009.