1. Department of Internal Medicine, University of Central Florida/HCA Florida North Florida Hospital, Gainesville, Florida, USA
2. Department of Internal Medicine, King Edward Medical University, Lahore, Punjab, Pakistan
3. Mayo Hospital, Lahore, Punjab, Pakistan
4. Department of Internal Medicine, University of Alabama, Montgomery, Alabama, USA
5. Monmouth Medical Center, Long Branch, New Jersey, USA
6. Al-Aleem Medical College, Lahore, Pakistan
7. University of Alberta, Edmonton, Alberta, Canada
8. Saint Louis University Hospital, St. Louis, Missouri, USA