1. Department for Health Evidence, Radboud Institute for Health Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands.
2. East, Central and Southern Africa Health Community, Arusha, Tanzania.
3. Department of Surgery, Kilimanjaro Christian Medical Centre, Moshi, Tanzania.
4. Institute of Global Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland.
5. Department of Epidemiology and Public Health Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland.