1. Department of Emergency Medicine, The Warren Alpert Medical School of Brown University, Providence, Rhode Island.
2. Division of Infectious Diseases, Brown Medical School, The Miriam Hospital, Providence, Rhode Island.
3. Department of Internal Medicine, Moi University School of Medicine, Eldoret, Kenya.
4. Department of Surgery, Moi University School of Medicine, Eldoret, Kenya.
5. Division of Infectious Disease, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.