1. Department of Urology, Faculty of Medicine, Universitas Airlangga, Surabaya, East Java, Indonesia.
2. Department of Urology, Dr. Soetomo General-Academic Hospital, Surabaya, East Java, Indonesia.
3. S.H. Ho Urology Centre, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong.
4. Department of Urology, Universitas Airlangga Teaching Hospital, Surabaya, East Java, Indonesia.