1. Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom;
2. Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford, United Kingdom;
3. Henry Wellcome Building for Molecular Physiology, University of Oxford, Oxford, United Kingdom;
4. Nuffield Department of Anaesthetics, John Radcliffe Hospital, Oxford, United Kingdom; and
5. Laboratory of High Altitude Adaptation, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru