TY  - RPRT
TI  - Diabetic retinopathy study. Data acquisition and its reliability.
AU  - F Koerner
AU  - U Koerner
AU  - N Eichenseher
PY  - 1977
DO  - 10.1007/bf00407865
UR  - https://pubmed.ncbi.nlm.nih.gov/301717/
ID  - 301717
ER  -