TY  - RPRT
TI  - Ecologic studies of multiple sclerosis.
AU  - K Lauer
PY  - 1997
DO  - 10.1212/wnl.49.2_suppl_2.s18
UR  - https://pubmed.ncbi.nlm.nih.gov/9270689/
ID  - 9270689
ER  -