- Oxygen as an abortive Treatment http://www.clusterheadaches.com/O2/index.html
- “High-Flow Oxygen for Treatment of Cluster Headache” Journal of the American Medical Association http://jama.ama-assn.org/content/302/22/2451.full
- “Inhaled Oxygen and Cluster Headache Sufferers in the United States: Use, Efficacy and Economics: Results from the United States Cluster Headache Survey” http://www.clusterheadaches.com/O2/Oxygen-survey-final.pdf
- Clusterheadaches.com store http://www.clusterheadaches.com/khxc/
