title: The William Allan Memorial Award Lecture: Genetic nosology: three approaches.
mesh_terms: D002874:Chromosome Mapping; D002877:Chromosomes, Human; D003241:Consanguinity; D005006:Ethnicity; D005260:Female; D030342:Genetic Diseases, Inborn / Q000145:classification*; D005826:Genetics, Medical; D005828:Genetics, Population; D006801:Humans; D009083:Mucopolysaccharidoses / Q000145:classification / Q000235:genetics; D010414:Pennsylvania; D014960:X Chromosome