[1] Univ Coll Cork, Cork, Ireland
[2] Univ Perugia, Dept Surg & Biomed Sci, Sect Anaesthesia Analgesia & Intens Care, Perugia, Italy
[3] Technion Israel Inst Technol, Intens Care & Pain Therapy Div, Chair Anaesthesiol, Fac Med,Carmel Med Ctr, Haifa, Israel
[4] Evangel Hosp Vienna, Dept Anaesthesia & Intens Care, Vienna, Austria
[5] Sigmund Freud Private Univ, Vienna, Austria
[6] Univ Helsinki, Dept Anaesthesiol, Helsinki, Finland
[7] Helsinki Univ Hosp, Helsinki, Finland
[8] Riga Stradins Univ, Dept Anaesthesiol & Intens Care Med, Riga, Latvia