[Statistical investigation of retinoblastoma in the Shanghai district].
D002648:Child; D002675:Child, Preschool; D002681:China; D005134:Eye Neoplasms / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009154:Mutation; D010375:Pedigree; D012175:Retinoblastoma / Q000453:epidemiology* / Q000235:genetics; D012306:Risk