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Zhang C, Han Y, Miao L, Yue Z, Xu M, Liu K, Hou J.Zhang C, et al. Among authors: liu k.J Periodontal Res. 2023 Oct;58(5):986-996. doi: 10.1111/jre.13159. Epub 2023 Jul 13.J Periodontal Res. 2023.PMID: 37439265
Zhang C, Liu K, Hou J.Zhang C, et al. Among authors: liu k.J Periodontol. 2021 Jul;92(7):44-53. doi: 10.1002/JPER.20-0225. Epub 2020 Nov 10.J Periodontol. 2021.PMID: 33107041
Zhang C, Zhang H, Yue Z, Miao L, Han Y, Liu K, Hou J.Zhang C, et al. Among authors: liu k.BMJ Open. 2020 Dec 10;10(12):e040046. doi: 10.1136/bmjopen-2020-040046.BMJ Open. 2020.PMID: 33303446Free PMC article.
Zhu WD, Hou JX, Liu KN, Meng HX, Tang XL.Zhu WD, et al.Beijing Da Xue Xue Bao Yi Xue Ban. 2009 Feb 18;41(1):56-61.Beijing Da Xue Xue Bao Yi Xue Ban. 2009.PMID: 19221566Free article.Chinese.