1. Colchester Hospital University Foundation Trust; Essex UK
2. Section of Urology; Department of Molecular Medicine and Surgery; Karolinska Institutet; Stockholm Sweden
3. Center for Minimally Invasive Urological Surgery; Athens Medical Center; Athens Greece
4. Facharzt fur Urologie; Diakonissenkrankenhaus Flensburg; Flensburg Germany
5. Blood Transfusion Center; National Reference Center for Congenital Bleeding Diseases; Laiko General Hospital; Athens Greece
6. 1st University Department of Urology; Laiko General Hospital; National and Kapodistrian Athens University; Athens Greece