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Choo DC, Chew SK, Tan EH, Lim MK, Monteiro EH.Choo DC, et al. Among authors: tan eh.Ann Acad Med Singap. 1995 Mar;24(2):316-21.Ann Acad Med Singap. 1995.PMID: 7653978Clinical Trial.
Tan EH, Khoo KS, Wee J, Fong KW, Lee KS, Lee KM, Chua ET, Tan T, Khoo-Tan HS, Yang TL, Au E, Tao M, Ong YK, Chua EJ.Tan EH, et al. Among authors: tan t.Ann Oncol. 1999 Feb;10(2):235-7. doi: 10.1023/a:1008390929826.Ann Oncol. 1999.PMID: 10093695Free article.Clinical Trial.