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Shen P, Cai F, Nowicki A, Vincent J, Reynolds EC.Shen P, et al. Among authors: cai f.J Dent Res. 2001 Dec;80(12):2066-70. doi: 10.1177/00220345010800120801.J Dent Res. 2001.PMID: 11808763Clinical Trial.
Cai F, Shen P, Morgan MV, Reynolds EC.Cai F, et al.Aust Dent J. 2003 Dec;48(4):240-3. doi: 10.1111/j.1834-7819.2003.tb00037.x.Aust Dent J. 2003.PMID: 14738126Free article.Clinical Trial.
Iijima Y, Cai F, Shen P, Walker G, Reynolds C, Reynolds EC.Iijima Y, et al. Among authors: cai f.Caries Res. 2004 Nov-Dec;38(6):551-6. doi: 10.1159/000080585.Caries Res. 2004.PMID: 15528910Clinical Trial.