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Chan SHS, Wong CKH, Wu T, Wong W, Yu MKL, Au ICH, Chan GCF.Chan SHS, et al.Eur J Health Econ. 2023 Nov;24(8):1373-1382. doi: 10.1007/s10198-022-01548-5. Epub 2022 Nov 20.Eur J Health Econ. 2023.PMID: 36403177Free PMC article.
Lee AC, Chui CH, Kwok R, Lee KS, Fong CM, Wong WH.Lee AC, et al.Singapore Med J. 2023 May;64(5):319-325. doi: 10.11622/smedj.2021164.Singapore Med J. 2023.PMID: 34688228Free PMC article.Review.
Lee SL, Wong W, Lau YL.Lee SL, et al.Pediatr Allergy Immunol. 2004 Feb;15(1):72-8. doi: 10.1046/j.0905-6157.2003.00109.x.Pediatr Allergy Immunol. 2004.PMID: 14998385
Ip P, Wong V, Ho M, Lee J, Wong W.Ip P, et al.Pediatr Int. 2004 Dec;46(6):715-21. doi: 10.1111/j.1442-200x.2004.01972.x.Pediatr Int. 2004.PMID: 15660873Retracted.
Ip P, Wong V, Ho M, Lee J, Wong W.Ip P, et al.J Child Neurol. 2004 Jun;19(6):431-4. doi: 10.1177/088307380401900606.J Child Neurol. 2004.PMID: 15446391
Wong S, Chan K, Wong V, Wong W.Wong S, et al.Child Care Health Dev. 2002 Mar;28(2):157-61. doi: 10.1046/j.1365-2214.2002.00256.x.Child Care Health Dev. 2002.PMID: 11952651
Chua GT, Ho FK, Tung KT, Wong RS, Cheong KN, Yip PS, Fan SY, Wong WH, Qiao Y, Chui CS, Li SX, Ip P.Chua GT, et al.Vaccine. 2020 Jan 29;38(5):1025-1031. doi: 10.1016/j.vaccine.2019.11.044. Epub 2019 Nov 27.Vaccine. 2020.PMID: 31786002