Genetic implications of return migration.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004641:Emigration and Immigration / Q000639:trends*; D005190:Family; D005260:Female; D005828:Genetics, Population; D006801:Humans; D007494:Ireland; D008297:Male; D009660:Northern Ireland; D010290:Parents