1. Asst. Professor, Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
2. Post-Doctoral Trainee, Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
3. Asst. Professor, Department of social and preventive medicine, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.
4. Professor and Head, Department of Urology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.