1. Departments of Obstetrics and Gynecology, Pediatrics, Public Health and Preventive Medicine, Oregon Health & Science University, Portland, Oregon 97239, Department of Obstetrics and Gynecology, Oulu University Hospital, Oulu, Finland, Proteogenix, Inc., Beaverton, Oregon 97006, National Institute for Health and Welfare, Oulu, Finland, and Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington 98195