Studien- und Forschungsaufenthalte

1982
Urologische Klinik und Poliklinik
Klinikum der Johannes Gutenberg-Universität Mainz
(Direktor: Prof. Dr. R. Hohenfellner)

1987
Department of Medical Radiobiology
Karolinska Hospital
Stockholm (Schweden)
(Direktor: Prof. Dr. B. Tribukait)

1987
Department of Urology
University of California, Davis (UCD)
Sacramento (California, USA)
(Chairman: Prof. R. W. deVere White, M.D.)

1993
Department of Pediatric Urology
University of Pennsylvania
Children's Hospital of Philadelphia
Philadelphia (Pennsylvania, USA)
(Chairman: Prof. J. W. Duckett, Jr., M.D.)

1993
Department of Urology
Texas Endosurgery Institute
San Antonio (Texas, USA)
(Chairman: W. W. Schuessler, M.D.)

1993
Department of Urology 
University of Southern California Medical Center
Los Angeles (California, USA)
(Chairman: Prof. D. G. Skinner, M.D.)

1994
Urologische Abteilung
Allgemeines Krankenhaus Hamburg-Harburg
(Ltd. Arzt: Prof. Dr. F. Schreiter)

1995
Department of Urology
The Johns Hopkins Hospital
Baltimore (Maryland, USA)
(Chairman: Prof. P. C. Walsh, M.D.)