1. Division of Infectious Diseases, Hospital Gustavo Nelson Collado, Chitré, Herrera, Panama
2. Gorgas Memorial Institute for Health Studies, Panama City, Panama
3. Division of Critical Care, Hospital Luis ‘Chicho’ Fábrega, Veraguas, Panama
4. Division of Pulmonary and Critical Care, San Antonio Military Medical Center, 3551 Roger Brooke Dr. Fort Sam Houston, TX, USA
5. Department of Medicine, Division of Infectious Diseases, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, USA