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Lee, Seung Mi; Lee, Kyung A; Lee, JoonHo; Park, Chan-Wook; Yoon, Bo Hyun
EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY; Vol.148 2; 152-157
Ko, Hyun-Joo; Jun, Jong Kwan
Journal of Perinatal Medicine, Vol.42 No.4, pp. 449-455