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Hon KL, Ho JK, Hung EC, Cheung KL, Ng PC.Hon KL, et al. Among authors: cheung kl.J Natl Med Assoc. 2008 Aug;100(8):952-6. doi: 10.1016/s0027-9684(15)31411-5.J Natl Med Assoc. 2008.PMID: 18717147
Ng PC, Fok TF, Lee CH, Cheung KL, Li CK, So KW, Wong W, Yuen PM.Ng PC, et al. Among authors: cheung kl.Acta Paediatr. 1998 Nov;87(11):1197-9. doi: 10.1080/080352598750031220.Acta Paediatr. 1998.PMID: 9846925
Ng PC, Lee CH, To KF, Fok TF, So KW, Wong W, Cheung KL.Ng PC, et al. Among authors: cheung kl.J Paediatr Child Health. 1999 Jun;35(3):306-8.J Paediatr Child Health. 1999.PMID: 10404457