RT Journal Article
SR Electronic
T1 Incidence or prevalence.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 481
OP 482
DO 10.1136/bjo.73.7.481
VO 73
IS 7
A1 R J Smith
YR 1989
UL http://bjo.bmj.com/content/73/7/481.abstract
AB