TY  - RPRT
TI  - Why do we still not know whether refractive error causes headaches? Towards a framework for evidence based practice.
AU  - G E Gordon
AU  - E P Chronicle
AU  - P Rolan
PY  - 2001
UR  - https://pubmed.ncbi.nlm.nih.gov/11220040/
ID  - 11220040
ER  -