[1] Treviso Reg Hosp, Dept Surg 1, Pelv Floor Unit, I-31100 Treviso, Italy
[2] Med Univ, Dept Paediat Radiol, Lublin, Poland
[3] Sydney Med Sch Nepean, Sydney, NSW, Australia
[4] Univ Minnesota, Div Colon & Rectal Surg, Minneapolis, MN USA
[5] Mayday Univ Hosp, Dept Obstet & Gynaecol, Croydon, Surrey, England
[6] Univ Oklahoma, Hlth Sci Ctr, Div Obstet & Gynecol, Sect Female Pelv Med & Reconstruct Surg, Oklahoma City, OK USA
[7] Princess Grace Hosp, Dept Radiol, London, England