Farouk A, Tawfick A, Shoeb M, Mahmoud MA, Mostafa DE, Hasan M, Abdalla HM.
Department of Urology, Ain Shams University Hospital, Cairo, Egypt.

Ergin G, Kirac M, Kopru B, Ebiloglu T, Kibar Y, Biri H.
Department of Urology, Koru Ankara Hospital, Ankara, Turkey.
Department of Urology, Gulhane Training and Research Hospital, Ankara, Turkey.

Sarica K, Eryildirim B, Tuerxun A, Batuer A, Kavukoglu O, Buz A, Zeng G.
Lütfi Kirdar Training and Research Hospital Urology Clinic, Istanbul, Turquía.
The First People's Hospital of Kashgar Erea, Kashgar City, Xinjiang, China.
Department of Urology, Guangdong Key Laboratory of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Fojecki GL, Tiessen S, Sloth Osther PJ.
Department of Urology, Hospital of Southern Jutland, Sønderborg, Denmark.
Department of Urology, Odense University Hospital, Odense, Denmark.
Urological Research Center, Department of Urology, Lillebaelt Hospital, University of Southern, Denmark.

Woźniak P, Kontek B, Różański W, Olas B.
2nd Department of Urology, Medical University of Łódź, Pabianicka 62, Łódź, Poland.
Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, Pomorska 141/3, Łódź, Poland.