Lubis, B., Department of Anesthesiology and Intensive Care, Faculty of Medicine, Universitas Sumatera Utara, Indonesia; Fatoni, A.Z., Department of Anesthesiology, Faculty of Medicine, Universitas Brawijaya, Indonesia; Fadhlurrahman, A.F., Department of Anesthesiology, Faculty of Medicine, Universitas Brawijaya, Indonesia; Siswagama, T.A., Department of Anesthesiology, Faculty of Medicine, Universitas Brawijaya, Indonesia; Vitraludyono, R., Department of Anesthesiology, Faculty of Medicine, Universitas Brawijaya, Indonesia; Lestari, M.I., Department of Anesthesiology, Faculty of Medicine, Universitas Sriwijaya, Indonesia; Nurdin, H., Department of Anesthesiology, Faculty of Medicine, Universitas Hasanuddin, Indonesia; Permana, S.A., Department of Anesthesiology, Faculty of Medicine, Universitas Hasanuddin, Indonesia; Susanti, A., Department of Anesthesiology, Faculty of Medicine, Universitas Hasanuddin, Indonesia; Prima, A., Department of Anesthesiology, Faculty of Medicine, Universitas Sumatera Utara, Indonesia; Viandy, V., Department of Anesthesiology, Faculty of Medicine, Universitas Sumatera Utara, Indonesia; Kilapong, B., Department of Anesthesiology and Intensive Theraphy, Awal Bros Hospital Batam, Indonesia; Saragi Sitio, N.D.K., Department of Anesthesiology and Intensive Theraphy, Awal Bros Hospital Batam, Indonesia; Pradian, E., Department of Anesthesiology and Intensive Theraphy, Awal Bros Hospital Batam, Indonesia; Ardiwinangun, R.A., Department of Anesthesiology, Faculty of Medicine, Universitas Padjadjaran, Indonesia; Retnaningsih, Department of Anesthesiology, Dr. Kariadi Hospital, Faculty of Medicine Diponegoro University, Indonesia; Susilowati, D., Department of Anesthesiology, Dr. Kariadi Hospital, Faculty of Medicine Diponegoro University, Indonesia; Arifin, J., Department of Anesthesiology and Intensive Theraphy, Kariadi Hospital Semarang, Indonesia; Sugiarto, A., Department of Anesthesia and Intensive Care, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Indonesia; Aditianingsih, D., Department of Anesthesia and Intensive Care, Cipto Mangunkusumo Hospital, Faculty of Medicine, Universitas Indonesia, Indonesia