Institution: | 1. Oregon Health & Science University, Portland, OR 97239, USA;2. ESE Clínica de Maternidad Rafael Calvo, Cartagena, Colombia;3. Hospital General de Medellín, Universidad de Antioquia, Departamento de Ginecología y Obstetricia, NACER Salud Sexual y Reproductiva, Medellín, 050010 Colombia;4. World Health Organization, Department of Reproductive Health & Research, Geneva, 27 Switzerland;5. Global Network for Perinatal & Reproductive Health-FUNDARED-MATERNA |