[1] Hop La Pitie Salpetriere, Emergency Dept, Paris, France
[2] Hop La Pitie Salpetriere, Pneumol & Intens Care Unit, Paris, France
[3] Univ Paris 04, Paris, France
[4] Beaujon Univ Hosp, Dept Anaesthet & Intens Care, Clichy, France
[5] Royal London Hosp, Emergency Dept, London E1 1BB, England