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Chia KS, Tan AL, Chia SE, Ong CN, Jeyaratnam J.Chia KS, et al. Among authors: ong cn.Ann Acad Med Singap. 1992 Nov;21(6):756-9.Ann Acad Med Singap. 1992.PMID: 1284195
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Ng TP, Goh HH, Ng YL, Ong HY, Ong CN, Chia KS, Chia SE, Jeyaratnam J.Ng TP, et al. Among authors: ong cn, ong hy.Br J Ind Med. 1991 Jul;48(7):485-91. doi: 10.1136/oem.48.7.485.Br J Ind Med. 1991.PMID: 1906733Free PMC article.
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Foo SC, Jeyaratnam J, Ong CN, Khoo NY, Koh D, Chia SE.Foo SC, et al. Among authors: ong cn.Am Ind Hyg Assoc J. 1991 May;52(5):212-7. doi: 10.1080/15298669191364613.Am Ind Hyg Assoc J. 1991.PMID: 1951061
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Ong CN, Kong YM, Ong HY, Teramoto K.Ong CN, et al. Among authors: ong hy.Pharmacol Toxicol. 1990 Jan;66(1):23-6. doi: 10.1111/j.1600-0773.1990.tb00695.x.Pharmacol Toxicol. 1990.PMID: 2308903
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