1. Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo, Venezuela
2. Universidad Simon Bolivar, Facultad de Ciencias de la Salud, Barranquilla, Colombia
3. Clinical Pharmacology Unit, Jose Maria Vargas School of Medicine, Central University of Venezuela, Caracas, Venezuela
4. Pulmonary and Critical Care Medicine Department, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, United States