Mary Hediger 1, Barbara Luke 2, David Grainger 3, Ruta Misiunas 4, Elaine Anderson 4, Frank Witter 5, Jill Mauldin 6, Roger Newman 7, Clark Nugent 8, Mary Jo O'Sullivan 9, Gary Hankins 10, Mary D'Alton 11
1 National Institute of Child Health and Human Development/NIH, Epidemiology/DESPR, Washington, District of Columbia
2 University of Miami, Epidemiology & Public Health, Miami, Florida
3 University of Kansas, Obstetrics and Gynecology, Wichita, Kansas
4 University of Michigan, Obstetrics & Gynecology, Ann Arbor, Michigan
5 Johns Hopkins University, Gynecology/Obstetrics, Baltimore, Maryland
6 Medical University of South Carolina, Department of Obstetrics and Gynecology, Charleston, South Carolina
7 Medical University of South Carolina, Obstetrics and Gynecology, Charleston, South Carolina
8 University of Michigan, Obstetrics and Gynecology, Ann Arbor, Michigan
9 University of Miami, Obstetrics and Gynecology, Miami, Florida
10 University of Texas Medical Branch at Galveston, Obstretics & Gynecology, Galveston, Texas
11 Columbia University, Maternal Fetal Medicine, New York, New York