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Cheung, Thomas M.T., Loretta Y.C Yam, Loletta K.Y So, Arthur C.W Lau, Edwin Poon, Bernard M.H Kong, a Raymond W.H Yung. "Effectiveness of Noninvasive Positive Pressure Ventilation in the Treatment of Acute Respiratory Failure in Severe Acute Respiratory Syndrome." Chest 2004.

Cheung, Thomas M.T., et al. "Effectiveness of Noninvasive Positive Pressure Ventilation in the Treatment of Acute Respiratory Failure in Severe Acute Respiratory Syndrome." Chest 2004.