1. School of Medicine, King Edward Medical University Lahore, Punjab, Pakistan,
2. School of Medicine, Dow University of Health Sciences, Karachi, Sindh, Pakistan,
3. Department of Internal Medicine, Dow University of Health Sciences, Karachi, Sindh, Pakistan,
4. School of Medicine, Government Medical College, Siddipet, Telangana, India,
5. Department of Community Medicine, Fatima Jinnah Medical University, Lahore, Punjab, Pakistan,
6. Wolfson School of Medicine, University of Glasgow, Scotland, United Kingdom,
7. House Officer, Holy Family Hospital Rawalpindi, Punjab, Pakistan,
8. School of Medicine, Sharif Medical City Hospital, Lahore, Punjab, Pakistan.