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Ang LW, Ma S, Cutter J, Chew SK, Tan CE, Tai ES.Ang LW, et al. Among authors: ma s.Diabetes Res Clin Pract. 2005 Jan;67(1):53-62. doi: 10.1016/j.diabres.2004.05.003.Diabetes Res Clin Pract. 2005.PMID: 15620434
Lee VJ, Phua KH, Chenm MI, Chow A, Ma S, Goh KT, Leo YS.Lee VJ, et al. Among authors: ma s.Emerg Infect Dis. 2006 Jan;12(1):95-102. doi: 10.3201/eid1201.050556.Emerg Infect Dis. 2006.PMID: 16494724Free PMC article.
Goh KT, Cutter J, Heng BH, Ma S, Koh BK, Kwok C, Toh CM, Chew SK.Goh KT, et al. Among authors: ma s.Ann Acad Med Singap. 2006 May;35(5):301-16.Ann Acad Med Singap. 2006.PMID: 16829997Free article.
Low S, Chan FL, Cutter J, Ma S, Goh KT, Chew SK.Low S, et al. Among authors: ma s.Singapore Med J. 2007 Sep;48(9):824-9.Singapore Med J. 2007.PMID: 17728963Free article.
Massad E, Ma S, Burattini MN, Tun Y, Coutinho FA, Ang LW.Massad E, et al. Among authors: ma s.J Travel Med. 2008 May-Jun;15(3):147-55. doi: 10.1111/j.1708-8305.2008.00186.x.J Travel Med. 2008.PMID: 18494691Free article.
Cutter JL, Ang LW, Lai FY, Subramony H, Ma S, James L.Cutter JL, et al. Among authors: ma s.Ann Acad Med Singap. 2010 Apr;39(4):273-10.Ann Acad Med Singap. 2010.PMID: 20473451Free article.