1. Newcastle University; c/o Cochrane Incontinence Group, Institute of Health & Society; Baddiley-Clarke Building Richardson Road Newcastle Upon Tyne England UK NE2 4AX
2. Maastricht University Medical Centre; Pelvic Care Center Maastricht; PO Box 5800 Maastricht Netherlands 6202 az
3. Norwegian School of Sport Sciences; Department of Sports Medicine; Oslo Norway
4. University of Aberdeen; Health Services Research Unit; 3rd Floor, Health Sciences Building Foresterhill Aberdeen Scotland UK AB25 2ZD