Professor of Medicine, McMaster University

School of Public Health and Health Sciences, University of Massachusetts, Amherst

Harvard Medical School

Dean of the Faculty and Professor of Epidemiology, Harvard School of Public Health

Associate Professor, Harvard Medical School, Massachusetts General Hospital

cincinnati children's

Professor of Obstetrics and Gynecology University of Pittsburgh

Principal Investigator, Mother Infant Research Institute, Tufts Medical Center, Boston

Professor of Obstetrics & Gynaecology, University of Adelaide

Professor of Medicine, UCLA