1. Second Department of Obstetrics and Gynaecology; Aristotle University of Thessaloniki; Thessaloniki Greece
2. Obstetrics Directorate; Liverpool Women's NHS Foundation Trust; Liverpool UK
3. Department of Obstetrics and Gynaecology; University Hospital of Ioannina; Ioannina Greece
4. Department of Epidemiology; Harvard TH Chan School of Public Health; Boston MA USA
5. Stanford Prevention Research Center; Department of Medicine and Department of Health Research and Policy; Palo Alto California USA
6. c/o Cochrane Incontinence, Population Health Sciences Institute; Newcastle University; Newcastle upon Tyne UK
7. c/o Cochrane Pregnancy and Childbirth, Department of Women's and Children's Health; The University of Liverpool; Liverpool UK
8. Cochrane MOSS Network, c/o Cochrane Pain Palliative and Supportive Care Group; Oxford University Hospitals NHS Foundation Trust; Oxford UK