1. Department of Internal Medicine Texas Tech University Health Sciences Center Lubbock TX USA
2. Department of Medicine David Geffen School of Medicine University of California, Los Angeles Los Angeles CA USA
3. Internal Medicine Residency Program University of Hawaii Honolulu HI USA
4. Division of Pulmonary and Critical Care Medicine Department of Internal Medicine Texas Tech University Health Sciences Center Lubbock TX USA
5. Division of Nephrology and Hypertension Department of Medicine Mayo Clinic Rochester MN USA