1. Department of General Surgery, Rawalpindi Medical University, Rawalpindi, Pakistan
2. Department of Neurosurgery, RHQ City Hospital, Gilgit, Pakistan
3. Department of Medicine, Rawalpindi Medical University, Rawalpindi, Pakistan
4. Department of General Surgery, RHQ City Hospital, Gilgit, Pakistan
5. Department of Surgery, Rawalpindi Medical University, Rawalpindi, Pakistan
6. Department of Health Sciences, Mid Sweden University, Östersund, Sweden