TY  - RPRT
TI  - Multiple sclerosis: nature or nurture.
AU  - E S Williams
AU  - R O McKeran
PY  - 1991
DO  - 10.1136/bmj.302.6780.846-c
UR  - https://pubmed.ncbi.nlm.nih.gov/2025712/
ID  - 2025712
ER  -