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Chan HH, Yeung VT, Chow CC, Ko GT, Cockram CS.Chan HH, et al. Among authors: chow cc.Postgrad Med J. 1995 Feb;71(832):102-3. doi: 10.1136/pgmj.71.832.102.Postgrad Med J. 1995.PMID: 7724418Free PMC article.