1. Division of Pulmonary, Critical Care, & Sleep Medicine and Physiology, Department of Medicine, University of California, San Diego, California
2. Servicio de Neumología, Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Madrid, España
3. Laboratorio de Fisiología Comparada, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Perú
4. Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
5. Center for Physiological Genomics of Low Oxygen, University of California, San Diego, California