1. Division of Infectious Diseases, Columbia University Irving Medical Center and NewYork-Presbyterian Hospital, New York, New York, USA.
2. ICAP, Mailman School of Public Health, Columbia University, New York, New York, USA.
3. Acute Care Services, Attending Physician, Emergency Medicine, Permanente Medicine, Mid-Atlantic Permanente Medical Group, Rockville, Maryland, USA.
4. Department of Medicine, Westchester Medical Center, Valhalla, New York, USA.
5. New York Presbyterian Hospital, Columbia University Irving Medical Center and NewYork-Presbyterian Hospital, New York, New York, USA.