Affiliation: | 1.Department of Internal Medicine, Dow University of Health Sciences–Ojha Campus, Karachi, Pakistan;2.Department of Internal Medicine, Dow University of Health Sciences, Karachi, Pakistan;3.Indira Gandhi Government Medical College, Nagpur, India;4.Department of Internal Medicine, Ziauddin Medical University, Karachi, Pakistan;5.Adjunct Clinical Professor of Medicine and Pharmacology, Texas A&M University, College Station, Texas |