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Journal of Obstetrics and Gynaecology Research > 49 > 4 > 1114 - 1120
Journal of Medical Virology > 93 > 7 > 4480 - 4487
American Journal of Obstetrics and Gynecology > 2006 > 195 > 5 > 1210-1218
Early Human Development > 1998 > 51 > 2 > 159-169
American Journal of Obstetrics and Gynecology > 1997 > 176 > 1 Part 1 > 33-36