TY  - RPRT
TI  - Primary lateral sclerosis.
AU  - S Fredrikson
AU  - H Link
PY  - 1989
DO  - 10.1001/archneur.1989.00520470018017
UR  - https://pubmed.ncbi.nlm.nih.gov/2818250/
ID  - 2818250
ER  -