1 Médecins Sans Frontières Operational Center Paris (MSF-OCP), Paris, France.
2 Médecins Sans Frontières, Medical Department, New York, NY; Division of General Internal Medicine, Albert Einstein College of Medicine Albert Einstein College of Medicine, Bronx, NY.
3 Médecins Sans Frontières, Medical Department, New York, NY.
4 Médecins Sans Frontières, Medical Department, New York, NY. Electronic address: david.olson@newyork.msf.org.