TY  - RPRT
TI  - Epidemiologic contributions to multiple sclerosis: an overview.
AU  - J F Kurtzke
PY  - 1980
DO  - 10.1212/wnl.30.7_part_2.61
UR  - https://pubmed.ncbi.nlm.nih.gov/6993993/
ID  - 6993993
ER  -