Đoàn, M. L.; Nguyễn, T. P. L.; Trần, V. L.; Ngô, H. Q.; Hồ, Q. N.; Kiều, V. T.; Nguyễn, V. C.; Lê, T. T. H.; Nguyễn, P. N.; Nguyễn, L. T. HOW ADEQUATE IS PREOXYGENATION BEFORE ENDOSCOPIC SEDATION IN REDUCING HYPOXEMIA: IS ONE MINUTE OR TWO MINUTES ENOUGH?. JPMP175 2025, 11.