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. Pulmonary and Critical Care Medicine Department, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, United States
4. Clinical Pharmacology Unit, School of Medicine José María Vargas, Central University of Venezuela, Caracas, Venezuela