1. Department of General Surgery, Maulana Azad Medical College, New Delhi 110002, India
2. Maharishi Markendeshwar Institute of Medical Sciences and Research, D-22, Residential Complex, MMU Complex, Mullana, Ambala 133203, India
3. Minimal Access Surgery, Maulana Azad Medical College, New Delhi 110002, India
4. Department of General Surgery, Government Medical College, Srinagar 190010, India