1. Assisted reproductive technology (ART) committee. Current status of assisted reproductive technology in Korea, 2007. Korean J Obstet Gynecol. 2010. 53:1052–1077.
2. Cunningham FG, Leveno KJ, Bloom SL, Hauth JC, Gilstrap LC II, Wenstrom KD. Williams Obstetrics. 2005. 22nd ed. New York: McGraw-Hill.
3. Centers for Disease Control and Prevention. American Society for Reproductive Medicine. Society for Assisted Reproductive Technology. 2008 Assisted reproductive technology success rates. National summary and fertility clinic reports. 2010. Atlanta (US): Department of Health and Human Services, Centers for Disease Control and Prevention.
4. de Mouzon J, Goossens V, Bhattacharya S, Castilla JA, Ferraretti AP, Korsak V, et al. Assisted reproductive technology in Europe, 2006: results generated from European registers by ESHRE. Hum Reprod. 2010. 25:1851–1862.