Department of Anesthesiology and Intensive Care, Faculty of Medicine, Universitas Indonesia-Cipto Mangunkusumo General Hospital, Jakarta, Indonesia; Semen Padang Hospital, Jl. Raya By Pass Km. 7, West Sumatera, Kecamatan Pauh, Indonesia
Margaretha R.E., Department of Anesthesiology and Intensive Care, Faculty of Medicine, Universitas Indonesia-Cipto Mangunkusumo General Hospital, Jakarta, Indonesia, Semen Padang Hospital, Jl. Raya By Pass Km. 7, West Sumatera, Kecamatan Pauh, Indonesia; George Y.W.H., Department of Anesthesiology and Intensive Care, Faculty of Medicine, Universitas Indonesia-Cipto Mangunkusumo General Hospital, Jakarta, Indonesia; Hidayat J., Department of Anesthesiology and Intensive Care, Faculty of Medicine, Universitas Indonesia-Cipto Mangunkusumo General Hospital, Jakarta, Indonesia