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Choi EPH, Liao Q, Soong I, Chan KKL, Lee CCY, Ng A, Sze WK, Tsang JWH, Lee VHF, Lam WWT.Choi EPH, et al.Health Qual Life Outcomes. 2020 Feb 17;18(1):29. doi: 10.1186/s12955-020-01289-0.Health Qual Life Outcomes. 2020.PMID: 32066444Free PMC article.
Choi EPH, Hui BPH, Wan EYF.Choi EPH, et al.Int J Environ Res Public Health. 2020 May 25;17(10):3740. doi: 10.3390/ijerph17103740.Int J Environ Res Public Health. 2020.PMID: 32466251Free PMC article.