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Social Science & Medicine > 2007 > 64 > 11 > 2272-2284
American Journal of Obstetrics and Gynecology > 2004 > 191 > 3 > 917-927
Social Science & Medicine > 2007 > 64 > 11 > 2272-2284
American Journal of Obstetrics and Gynecology > 2004 > 191 > 3 > 917-927