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Ip MS, Lam B, Ng MM, Lam WK, Tsang KW, Lam KS.Ip MS, et al. Among authors: tsang kw.Am J Respir Crit Care Med. 2002 Mar 1;165(5):670-6. doi: 10.1164/ajrccm.165.5.2103001.Am J Respir Crit Care Med. 2002.PMID: 11874812