1. Division of Molecular Biosciences, Imperial College London, London SW7 2AZ, U.K., Department of Obstetrics and Gynecology, University of Wisconsin Medical School, Madison, Wisconsin 53792-6177, Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia 23501-1980, M-SCAN Mass Spectrometry Research and Training Centre, Silwood Park, Ascot SL5 7PZ, U.K., and Department of Obstetrics, Gynecology and Women's Health, Division of Reproductive and Perinatal Research, School of...