6I.um A, Le Marehand L. A simple mouthwash method for obtaining genomic DNA in molecular epidemiological studies[J]. Canc- er Epidemiol Biomarkers Prey, 1998,7(8) : 719 -724.
7de Vries HG,Collee JM,van Veldhuizen MH,et al. Validation of the determination of deltaFS08 mutations of the cystic fibrosis gene in over 11 000 mouthwashes[J]. Hum Genet,1996,97(3) : 334-336.