TY  - RPRT
TI  - Multiple sclerosis associated with sinusitis: case-controlled study in general practice.
AU  - D Gay
AU  - G Dick
AU  - G Upton
PY  - 1986
DO  - 10.1016/s0140-6736(86)90936-0
UR  - https://pubmed.ncbi.nlm.nih.gov/2870312/
ID  - 2870312
ER  -