Abstract
Obstetrics & Gynecology 99 (2002) 647-651. doi:10.1016/S0029-7844(02)01658-7Received by publisher: 2001-05-30Harvest Date: 2016-01-04 12:20:32DOI: 10.1016/S0029-7844(02)01658-7Page Range: 647-65