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Mak LY, To WP, Wong DK, Fung J, Liu F, Seto WK, Lai CL, Yuen MF.Mak LY, et al. Among authors: liu f.World J Gastroenterol. 2019 Mar 21;25(11):1398-1408. doi: 10.3748/wjg.v25.i11.1398.World J Gastroenterol. 2019.PMID: 30918432Free PMC article.
Chong CK, Cheng CYS, Tsoi SYJ, Huang FY, Liu F, Fung J, Seto WK, Lai KK, Lai CL, Yuen MF, Wong DK.Chong CK, et al. Among authors: liu f.Sci Rep. 2020 Jan 21;10(1):802. doi: 10.1038/s41598-020-57637-z.Sci Rep. 2020.PMID: 31964944Free PMC article.