1. Consultant orthopaedic surgeon, Vidyasagar SG hospital.
2. Associate professor raiganj govt medical college, Professor Dept of orthopaedic surgery, NILRATAN SIRCAR Medical college and hoapital.
3. Professor Dept of orthopaedic surgery, NIL RATAN SIRCAR Medical college and hospital,
4. Assistant Professor, Department of Biostatistics, State University of New York at Buffalo, Buffalo NY14214 USA.
5. Institute of Post-Graduate Medical Education and Research, A.J.C. Bose Road, Kolkata700020, West Bengal, India.