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Cheng VC, Wong SS, Chen JH, Chan JF, To KK, Poon RW, Wong SC, Chan KH, Tai JW, Ho PL, Tsang TH, Yuen KY.Cheng VC, et al. Among authors: to kk.Chin Med J (Engl). 2012 Dec;125(23):4283-90.Chin Med J (Engl). 2012.PMID: 23217401
Cheng VC, Chan JF, Wong SC, Chen JH, Tai JW, Yan MK, Kwan GS, Tse H, To KK, Ho PL, Yuen KY.Cheng VC, et al. Among authors: to kk.Chin Med J (Engl). 2013 Dec;126(23):4504-9.Chin Med J (Engl). 2013.PMID: 24286415