@article{doi:10.1001/archopht.1989.01070010243030,
author = {Klein R and Klein BK and Moss SE and Davis MD and DeMets DL},
title = {The wisconsin epidemiologic study of diabetic retinopathy: Ix. four-year incidence and progression of diabetic retinopathy when age at diagnosis is less than 30 years},
journal = {Archives of Ophthalmology},
volume = {107},
number = {2},
pages = {237-243},
year = {1989},
doi = {10.1001/archopht.1989.01070010243030},
URL = { + http://dx.doi.org/10.1001/archopht.1989.01070010243030},
eprint = {/data/Journals/OPHTH/18005/archopht_107_2_030.pdf}
}