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Yeung NCY, Cheung KC, Chau HC, Leung AWK, Li CK, Lam TTN, Cheng HY, Cheung YT.Yeung NCY, et al. Among authors: cheng hy.Int J Environ Res Public Health. 2021 Jul 23;18(15):7815. doi: 10.3390/ijerph18157815.Int J Environ Res Public Health. 2021.PMID: 34360108Free PMC article.
Cheng HY, Chair SY, Wang Q, Cao X, Cheng L, Lee IFK.Cheng HY, et al. Among authors: cheng l.Res Nurs Health. 2019 Apr;42(2):148-154. doi: 10.1002/nur.21936. Epub 2019 Feb 2.Res Nurs Health. 2019.PMID: 30710372
Chair SY, Wang Q, Cheng HY, Lo SW, Li XM, Wong EM, Sit JW.Chair SY, et al. Among authors: cheng hy.BMC Womens Health. 2017 Sep 11;17(1):79. doi: 10.1186/s12905-017-0436-5.BMC Womens Health. 2017.PMID: 28893224Free PMC article.