参考文献

Dumas, Jacques; Khire, Uday; Lowinger, Timothy B.; Paulsen, Holger; Riedl, Bernd; Scott, William J.; Smith, Roger A.; Wood, Jill; Hatoum-Mokdad, Holia; Lee, Wendy; Redman, Aniko; Johnson, Jeffrey; Sibley, Robert Patent: US2012/46290 A1, 2012 ; Location in patent: Page/Page column 15-16 ; US 20120046290 A1