1. Department of Anesthesiology and Intensive Therapy, Medical University of Lodz, 90-154 Lodz, Poland
2. Department of Anesthesiology and Perioperative Medicine, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain
3. Emergency Medical Service EMS SUMMA 112, 28045 Madrid, Spain
4. Complejo Asistencial Universitario de Salamanca, 37001 Salamanca, Spain