enet Med 2011;13206-209. Pyeritz RE. The coming explosion in genetic testing-is there a duty to recontact? NEnglikted2011;365:1367-1369. Fritz A, Farrel P. Estimating the annual number of false negative cystic fibrosis newborn screening tests. Peelle:, FtAffunul2012;47:207-208. Johnston 0, Rubinstein WS, Facio FM