1. Department of Internal Medicine, East Carolina University/Vidant Medical Center, Greenville, North Carolina
2. Department of Internal Medicine, University of Health Sciences, Lahore, Punjab, Pakistan
3. Department of Pulmonology and Critical Care, East Carolina University/Vidant Medical Center, Greenville, North Carolina
4. Department of Gastroenterology, East Carolina University/Vidant Medical Center, Greenville, North Carolina