Matlaga BR, Jansen JP, Meckley LM, Byrne TW, Lingeman JE
The James Buchanan Brady Urological Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland, Mapi Group, Boston and Boston Scientific Corp., Natick, Massachusetts, and Indiana Clinic Urology, Indiana University School of Medicine, Indianapolis, Indiana

Raiten J, Elkassabany N, Mandel JE
Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA

Yoo DE, Han SH, Oh HJ, Kim SJ, Shin DH, Lee MJ, Yoo TH, Kang SW, Choi KH
Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea

Onal B, Tansu N, Demirkesen O, Yalcin V, Huang L, Nguyen HT, Cilento BG, Erozenci A
Department of Urology, Children's Hospital Boston, Harvard Medical School, Boston, USA
Department of Urology, University of Istanbul Cerrahpasa Medical Faculty, Istanbul, Turkey.

Hoşcan MB, Ekinci M, Tunçkıran A, Oksay T, Ozorak A, Ozkardeş H
Department of Urology, GATA Haydarpasa Teaching Hospital, 34668, Uskudar, Istanbul, Turkey