1. Division of Pulmonary and Critical Care MedicineDepartment of MedicineJohns Hopkins University School of Medicine Baltimore MD USA
2. Unidad Médico‐Quirúrgica de Enfermedades RespiratoriasInstituto de Biomedicina de Sevilla (IBiS)Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES)Hospital Universitario Virgen del Rocío/Universidad de Sevilla Sevilla Spain
3. Departamento de PsicobiologiaUniversidade Federal de São Paulo São Paulo Brazil
4. Department of Environmental Health and EngineeringJohns Hopkins Bloomberg School of Public Health Baltimore MD USA