Clinical course and outcomes of ventilated critically ill COVID-19 patients in Selangor state, Malaysia - Zainol Abidin, Nor Haliza; Lee, Chew Kiok; Zakaria, Shaiful Azman; Ramaiah, Yasini; Hilmi, Zehan Sofia; Syed Maule, Shareen (Journal of Emergency and Critical Care Medicine, 2020)