TY  - RPRT
TI  - Headache studies; statistical data. II. Headache patterns.
AU  - H D OGDEN
PY  - 1952
DO  - 10.1016/0021-8707(52)90010-5
UR  - https://pubmed.ncbi.nlm.nih.gov/12990295/
ID  - 12990295
ER  -