The incidence and racial distribution of pterygium in West Malaysia.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002681:China; D005006:Ethnicity; D005260:Female; D005398:Fisheries; D006801:Humans; D007194:India; D008296:Malaysia; D008297:Male; D008875:Middle Aged; D011625:Pterygium / Q000453:epidemiology*; D012737:Sex Factors