Woo JG, Martin LJ, Ding L, Brown WM, Howard TD, Langefeld CD, Moomaw CJ, Haverbusch M, Sun G, Indugula SR, Cheng H, Deka R, Woo D. Quantitative criteria for improving performance of buccal DNA for high-throughput genetic analysis. BMC Genet. 2012 Aug 25; 13:75.