[1] Reliance Hosp, Cardiothorac & Liver Transplant Unit, Kopar Khairane, Navi Mumbai, India
[2] Yeovil Dist Hosp, Dept Anaesthet, Higher Kingston, Yeovil, England
[3] Royal Hosp, Natl Heart Ctr, Dept Cardiac Anaesthesia, Muscat, Oman
[4] Walton Ctr NHS Fdn Trust, Anaesthesia, Lower Lane, Liverpool, Merseyside, England