[1] Hosp Clin Barcelona, Dept Anesthesia & Crit Care, Villarroel 170, Barcelona 08036, Spain
[2] Inst Salud Carlos III, CIBER Enfermedades Resp, Madrid, Spain
[3] Hosp Santa Creu & Sant Pau, Dept Anesthesia & Crit Care, Barcelona, Spain
[4] Hosp La Princesa, Intens Care Unit, Madrid, Spain
[5] Uppsala Univ Hosp, Dept Surg Sci, Hedenstierna Lab, Uppsala, Sweden
[6] Hosp Privado Mar De Plata, Dept Anesthesia, Mar De Plata, Argentina
[7] Hosp Univ Gregorio Maranon, Dept Anesthesia & Crit Care, Madrid, Spain
[8] Hosp Clin Valencia, Dept Anesthesia & Crit Care, Valencia, Spain
[9] Hosp Clin Univ Valencia, Inst INCLIVA, Valencia, Spain
[10] Red Invest Serv Salud Enfermedades Cron REDISSEC, Navarrabiomed Fdn Miguel Servet, Pamplona, Spain
[11] Hosp Miguel Servet, Dept Anesthesia & Crit Care, Zaragoza, Spain
[12] Hosp La Princesa, Dept Anesthesia & Crit Care, Madrid, Spain
[13] Hosp Marques Valdecilla, Dept Anesthesia & Crit Care, Santander, Spain
[14] Hosp Univ Dr Negrin, Dept Anesthesia, Las Palmas Gran Canaria, Spain
[15] Hosp Salamanca, Dept Anesthesia & Crit Care T, Salamanca, Spain
[16] Hosp Univ Mutua Terrassa, Dept Anesthesia & Crit Care, Terrassa, Spain
[17] Hosp Univ Vinalopo, Dept Anesthesia & Crit Care, Elche, Spain
[18] Hosp 12 Octubre, Dept Anesthesia & Crit Care, Madrid, Spain
[19] Hosp Alvaro Cunqueiro, Dept Anesthesia & Crit Care, Vigo, Spain
[20] Clin Univ Pamplona, Dept Anesthesia & Crit Care, Pamplona, Spain
[21] Hosp Univ La Fe, Dept Anesthesia & Crit Care, Valencia, Spain
[22] Hosp Viigen Rocio, Dept Anesthesia & Crit Care, Seville, Spain
[23] Hosp Povisa, Dept Anesthesia & Crit Care, Vigo, Spain
[24] Hosp Dr Josep Trueta, Dept Anesthesia & Crit Care, Girona, Spain
[25] Fdn Jimenez Diaz, Dept Anesthesia & Crit Care, Madrid, Spain
[26] Complejo Univ MaternoInsular, Dept Anesthesia, Las Palmas Gran Canaria, Spain
[27] Hosp Univ Cent Asturias, Dept Anesthesia & Crit Care, Oviedo, Spain
[28] Hosp Univ Canarias, Dept Anesthesia & Crit Care, Tenerife, Spain
[29] Univ Foggia, Dept Anesthesia & Crit Care, Foggia, Italy
[30] Univ Ferrara, Dept Anesthesia & Crit Care, Ferrara, Italy
[31] CHU Clermont Ferrand, Anesthesia & Crit Care, Clermont Ferrand, France
[32] Univ El Basque, Dept Anesthesia, Bogota, Colombia
[33] Hosp Clin Fuerza Aerea Chile, Dept Anesthesia, Los Condes, Chile
[34] Ctr Hosp Sao Joao, Dept Anesthesia & Crit Care, Porto, Portugal
[35] Ctr Hosp Vila Nova Gaia Espinho, Dept Anesthesia & Crit Care, Vila Nova De Gaia, Portugal
[36] Med Pk Bahcelievler Hosp, Anesthesia & Crit Care, Istanbul, Turkey
[37] Hosp Badalona Germans Trias & Pujol, Dept Anesthesia & Crit Care, Badalona, Spain
[38] Hosp Especialidades Eugenio Espejo, Crit Care Dept, Quito, Ecuador
[39] Alexandria Univ Hosp, Dept Anesthesia, Alexandria, Egypt
[40] Kafrelsheikh Univ Hosp, Alexandria, Egypt
[41] Hosp Univ Ntra Sra Candelaria, Dept Anesthesia & Crit Care, Santa Cruz De Tenerife, Spain
[42] Hosp Univ Dr Negrin, Res Unit, Las Palmas Gran Canaria, Spain