1. Marie Stopes Society, Research, Monitoring and Evaluation, Technical Services Department, 21-C, Commercial Area, Old Sunset Boulevard, DHA-II, Karachi, Sindh 75500, Pakistan
2. Department of Urogynecology, Faculty of Medicine and Health Sciences, University of Gent, Sint-Pietersnieuwstraat 25, 9000 Gent, Belgium
3. Marie Stopes International, Research, Monitoring and Evaluation Department, 1 Conway Street, Fitzroy Square, London W1T 6LP, UK