Maternal complications and perinatal mortality: findings of the World Health Organization Multicountry Survey on Maternal and Newborn Health

JP Vogel,JP Souza, R Mori, N Morisaki, P Lumbiganon, M Laopaiboon, E Ortiz-Panozo, B Hernandez, R Perez-Cuevas, M Roy, S Mittal, JG Cecatti, O Tuncalp, AM Gulmezoglu, on behalf of the WHO Multicountry Survey on Maternal and Newborn Health Research Network