ĐOÀN, Mai Loan et al. HOW ADEQUATE IS PREOXYGENATION BEFORE ENDOSCOPIC SEDATION IN REDUCING HYPOXEMIA: IS ONE MINUTE OR TWO MINUTES ENOUGH?. Journal of 175 Practical Medicine and Pharmacy, [S. l.], n. 42, p. 11, 2025. DOI: 10.59354/ydth175.2025.382. Disponível em: https://jpmp175.vojs.vn/index.php/jpmp175/article/view/30. Acesso em: 25 may. 2026.