Yee CH, Chan ES, Hou SS, Ng CF

Division of Urology, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.

Tailly GG, Tailly-Cusse MM.

Department of Urology, AZ Klina , Brasschaat, Belgium.

Pais VM Jr.

Section of Urology, Department of Surgery, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth.

Al Ghazal A, Schnoeller TJ, Baechle C, Steinestel J, Jentzmik F, Steffens S, Hirning C, Schrader M, Schrader AJ

Department of Urology, Ulm University Medical Center, Prittwitzstrasse43,D- 89075 Ulm, Germany.

Adanur S, Ziypak T, Yapanoglu T, Polat O

Medical Faculty, Department of Urology, Ataturk University, Erzurum, Turkey,