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Malone S, Liu PP, Holloway R, Rutherford R, Xie A, Bradley TD.Malone S, et al. Among authors: liu pp.Lancet. 1991 Dec 14;338(8781):1480-4. doi: 10.1016/0140-6736(91)92299-h.Lancet. 1991.PMID: 1683918Clinical Trial.
De Hoyos A, Liu PP, Benard DC, Bradley TD.De Hoyos A, et al. Among authors: liu pp.Clin Sci (Lond). 1995 Feb;88(2):173-8. doi: 10.1042/cs0880173.Clin Sci (Lond). 1995.PMID: 7720341
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