参考文献

Dumas, Jacques; Khire, Uday; Lowinger, Timothy B.; Paulsen, Holger; Riedl, Bernd; Scott, William J.; Smith, Roger A.; Wood, Jill E.; Hatoum-Mokdad, Holia; Johnson, Jeffrey; Lee, Wendy; Redman, Aniko; Sibley, Robert; Renick, Joel Patent: US2007/244120 A1, 2007 ; Location in patent: Page/Page column 14 ; US 20070244120 A1