TY  - RPRT
TI  - Avoidable blindness.
AU  - A Sommer
PY  - 1988
DO  - 10.1111/j.1442-9071.1988.tb01197.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3042000/
ID  - 3042000
ER  -