1. The Emergency Department; Rangueil University Hospital; Toulouse France
2. University Toulouse 3; Toulouse France
3. The Department of Biochemistry; Rangueil University Hospital; Toulouse France
4. The Department of Epidemiology; Health Economics and Public Health University; Toulouse France
5. INSERM UMR1027; Toulouse France
6. The Cardiothoracic Intensive Therapy Unit; St. George's Hospital; London UK