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Liu T, Leung DKY, Lu S, Kwok WW, Sze LCY, Tse SSK, Ng SM, Wong PWC, Lou VWQ, Tang JYM, Wong DFK, Chan WC, Kwok RYK, Lum TYS, Wong GHY.Liu T, et al. Among authors: wong ghy, wong dfk, wong pwc.Trials. 2022 Apr 11;23(1):280. doi: 10.1186/s13063-022-06122-1.Trials. 2022.PMID: 35410292Free PMC article.Clinical Trial.
Li L, Zhu S, Tse N, Tse S, Wong P.Li L, et al.Addiction. 2016 May;111(5):795-805. doi: 10.1111/add.13285. Epub 2016 Jan 27.Addiction. 2016.PMID: 26687544Review.