University of Valladolid - Emergency Department, University of Valladolid - Faculty of Medicine, University of Valladolid - Emergency Department, Emergency Medical Services (SACYL) - Advanced Life Support, Hospital Clínico Universitario Valladolid - Emergency Department, Servicio de Asistencia Municipal de Urgencia y Rescate (SAMUR-Protección Civil), Government of the Community of Madrid - Pneumology Service, University of Castilla-La Mancha - Faculty of Health Sciences, Universidad Autónoma de Madrid - Hospital Universitario de La Princesa and University of Valladolid - Faculty of Medicine

Hospital Clínico Universitario Valladolid - Emergency Department, Emergency Medical Services (SACYL) - Advanced Life Support, University of Valladolid - Emergency Department, University of Valladolid, University of the Basque Country, European University of the Atlantic, European University of the Atlantic, European University of the Atlantic, University of Valladolid, Universidad Autónoma de Madrid - Hospital Universitario de La Princesa and University of Valladolid - Faculty of Medicine