1. Department of Anesthesia and Critical Care, Central Hospital of Defense “Gómez Ulla”, Madrid 28047, Spain
2. Department of Trauma and Orthopedic Surgery, Central Hospital of Defense “Gómez Ulla”, Madrid 28047, Spain
3. Department of Cardiology, Central Hospital of Defense “Gómez Ulla”, Madrid 28047, Spain
4. School of Medicine, Autónoma University, Madrid 28049, Spain