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Kee CC, Lim KH, Sumarni MG, Teh CH, Chan YY, Nuur Hafizah MI, Cheah YK, Tee EO, Ahmad Faudzi Y, Amal Nasir M.Kee CC, et al. Among authors: cheah yk.BMC Med Res Methodol. 2017 Jun 2;17(1):85. doi: 10.1186/s12874-017-0362-0.BMC Med Res Methodol. 2017.PMID: 28577547Free PMC article.