The Amish.
D001789:Blood Group Antigens / Q000235:genetics; D002357:Cartilage Diseases / Q000235:genetics; D002869:Chromosome Aberrations / Q000235:genetics; D025063:Chromosome Disorders; D003241:Consanguinity; D004613:Ellis-Van Creveld Syndrome / Q000235:genetics; D005006:Ethnicity; D030342:Genetic Diseases, Inborn / Q000235:genetics*; D006201:Hair Diseases / Q000235:genetics; D006801:Humans; D009820:Ohio; D010414:Pennsylvania
D001789:Blood Group Antigens