TY  - RPRT
TI  - High-altitude headache.
AU  - O Appenzeller
PY  - 1994
DO  - 10.1046/j.1468-2982.1994.1405318-2.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7828186/
ID  - 7828186
ER  -