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Asian Pacific Journal of Tropical Disease > 2011 > 1 > 3 > 241-244
American Journal of Obstetrics and Gynecology > 2010 > 202 > 3 > 268.e1-268.e7
Asian Pacific Journal of Tropical Disease > 2011 > 1 > 3 > 241-244
American Journal of Obstetrics and Gynecology > 2010 > 202 > 3 > 268.e1-268.e7