TY  - RPRT
TI  - Exacerbations, activity, and progression in multiple sclerosis.
AU  - C M Poser
PY  - 1980
DO  - 10.1001/archneur.1980.00500570019001
UR  - https://pubmed.ncbi.nlm.nih.gov/7417038/
ID  - 7417038
ER  -