1. Internal Medicine, Manipal College of Medical Sciences, Pokhara 33700, Nepal
2. Internal Medicine, Institute of Medicine, Kathmandu 44600, Nepal
3. Internal Medicine, Chitwan Medical College, Bharatpur 44200, Nepal
4. Internal Medicine, Patan Academy of Health Sciences-School of Medicine, Lalitpur 26500, Nepal
5. Division of Pulmonary, Critical Care and Sleep Medicine, Baylor Scott and White, Temple, TX 76508, USA
6. Pulmonary, Critical Care & Pharmacy, Texas A&M University, College Station, TX 79016, USA