title: Etiogenesis of the European cystic fibrosis polymorphism: heterozygote advantage against venereal syphilis?
mesh_terms: D002980:Climate; D003550:Cystic Fibrosis / Q000235:genetics* / Q000266:history / Q000382:microbiology; D005060:Europe; D006579:Heterozygote; D049669:History, 16th Century; D006801:Humans; D011110:Polymorphism, Genetic; D013587:Syphilis / Q000453:epidemiology* / Q000266:history; D044465:White People