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Man-Son-Hing M, Laupacis A, O'Connor AM, Biggs J, Drake E, Yetisir E, Hart RG.Man-Son-Hing M, et al. Among authors: drake e.JAMA. 1999 Aug 25;282(8):737-43. doi: 10.1001/jama.282.8.737.JAMA. 1999.PMID: 10463708Clinical Trial.