TY  - RPRT
TI  - Cluster headaches.
AU  - A P FRIEDMAN
AU  - H E MIKROPOULOS
PY  - 1958
DO  - 10.1212/wnl.8.9.653
UR  - https://pubmed.ncbi.nlm.nih.gov/13578060/
ID  - 13578060
ER  -