[1] Cleveland Clin, Weston, FL 33331 USA
[2] Ctr Adv Pelv Surg, Belleville, IL USA
[3] Loyola Univ, Med Ctr, Maywood, IL USA
[4] CHU Vaudois, Maternite, Lausanne, Switzerland
[5] Hosp Sao Joao, Oporto, Portugal
[6] Geisinger Med Ctr, Danville, PA USA
[7] Med Univ Graz, Graz, Austria
[8] Univ Hosp Hartlepool, Hartlepool, England
[9] Glostrup Cty Hosp, Glostrup, Denmark
[10] Univ Rostock, Acad Teaching Hosp, Schwerin, Germany