title: Retinitis pigmentosa in Ontario - a survey.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005799:Genes, Dominant; D005808:Genes, Recessive; D005817:Genetic Counseling; D008040:Genetic Linkage; D006801:Humans; D008297:Male; D008875:Middle Aged; D009864:Ontario; D012174:Retinitis Pigmentosa / Q000453:epidemiology / Q000235:genetics*; D014960:X Chromosome