1. Department of Anesthesiology, College of Health Sciences and Medicine, Dilla University, Dilla, Ethiopia.
2. Department of mental Health and Psychiatry, College of Health Sciences and Medicine, Dilla University, Dilla, Ethiopia.
3. Department of Internal medicine, College of Health Sciences and Medicine, Dilla University, Dilla, Ethiopia.
4. Department Anesthesiology, college of Health Sciences, University of Calcutta, Calcutta, India.