1. John Sealy School of Medicine, University of Texas Medical Branch, Galveston, Texas, USA.
2. Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, USA.
3. School of Nursing, University of Texas Medical Branch, Galveston, Texas, USA.
4. University of Texas Medical Branch Alumni, Galveston, Texas, USA.
5. Madrigal Pharmaceuticals, Conshohocken, Pennsylvania, USA.
6. Physiology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt.