1. Urology Residency, Aga Khan University, Karachi, Pakistan
2. Division of Urology, Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
3. Urology Research Centre, Tehran University of Medical Sciences, Tehran, Iran
4. Clinical Urology, EAU Section on Urolithiasis (EULIS) Urological Research Centre, Department of Urology, Fredericia Hospital, University of Southern Denmark, Fredericia, Denmark