Telha KA, Alkohlany K, Alnono I.
Department of Urology, Al-Thawrah Modern General Hospital and Ibn-Siena Hospital, Sana'a Medical College, Sana'a University, Yemen.

Kaczmarek K, Gołąb A, Słojewski M.
Department of Urology and Urological Oncology, Pomeranian Medical University, Szczecin, Poland.

Nussberger F, Roth B, Metzger T, Kiss B, Thalmann GN, Seiler R.
Department of Urology, University of Bern, Freiburgstrasse, 3010, Bern, Switzerland.

Vaysse T, Boytchev I, Antoni G, Croix DS, Choury AD, Laurent V, Pelletier G, Buffet C, Bou-Farah R, Carbonnel F.
Service de Gastroentérologie, University Hospital of Bicêtre, Assistance Publique-Hôpitaux de Paris, Université Paris Sud, Le Kremlin Bicêtre, France.

Abdelhamid M, Mosharafa A, Ibrahim HM, Dogha MM, Selim HM, El Ghoneimy MN Dr, Salem HK, Abdelazim MS, Badawy H.
Department of Urology, Cairo University, Cairo, Egypt.
Department of Urology, Fayoum University, Fayuom, Egypt.