1 Department of Anesthesiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
2 Department of Anesthesiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, New York, Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg-Essen, Essen, Germany.
3 Department of Anesthesiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand, Department of Anesthesiology, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, New York, karuna.won@mahidol.edu.