Authors
K.E. Freese
University of Pittsburgh Graduate School of Public Health, Department of Epidemiology, Pittsburgh, PA/US
L.M. Bodnar
University of Pittsburgh Graduate School of Public Health, Department of Epidemiology, Pittsburgh, PA/US
J.A. Hutcheon
University of British Columbia and the Children's and Women's Health Centre of British Columbia, Department of Obstetrics & Gynaecology, Vancouver, BC/CA
