[1] Toulouse Univ Hosp, Dept Anesthesiol & Intens Care, EA 4564, Toulouse, France
[2] Nantes Univ Hosp, Dept Anesthesiol & Intens Care, Nantes, France
[3] Bordeaux Univ Hosp, Dept Anesthesiol & Intens Care, Bordeaux, France
[4] Limoges Univ Hosp, Dept Anesthesiol & Intens Care, Limoges, France
[5] Toulouse Univ Hosp, Inserm U 858, Physiol Lab, Toulouse, France
[6] Univ Toronto, Dept Anesthesia, Toronto, ON M5S 3E2, Canada
[7] Univ Montreal, Fac Med, Montreal, PQ H3C 3J7, Canada