Five years of surveillance.
BOSU, Royal College of Ophthalmologists, 17 Cornwall Terrace, London NW1 4QW, UK.
M R
MR
Stanford
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D006801:Humans; D008875:Middle Aged; D009885:Ophthalmology / Q000592:standards*; D011159:Population Surveillance; D006113:United Kingdom