Young Han Park, Chae Choon Rhim, Seong Ju Kim, Jung Bae Kang, Pong Rhim Jang, Hong Bae Kim, Keun Young Lee, Chan Eun Park, Yong Jo, Eui Seon Rho, Yong Woo Lee, Seong Cheon Yang, Soo Ran Choi
Korean J Obstet Gynecol. 2011;54(8):435-440. Published online August 1, 2011