Cystic fibrosis mutation

If the incidence of cystic fibrosis is 1/2,500 among a population of Europeans, what is the predicted incidence of heterozygous carriers of a cystic fibrosis mutation in this population ... 

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I, 4-dihydropyridines as correctors of the cystic fibrosis transmembrane conductance regulator channel gating defect caused by cystic fibrosis mutations. Mol. Pharmacol. 2005, 68, 1736-1746. 

Heinonen, P., Iitia, A., Torresani, T., and Lovgren, T. (1997) Simple triple label detection of seven cystic fibrosis mutations by time resolved fluorometry. Clinical Chemistry, 43, 1142 1150. 

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Chehab, F. F. and Wall, F. (1992) Detection of multiple cystic fibrosis mutations by reverse dot blot hybridization a technology for carrier screening. Hum. Genetics 99, 163-168. 

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