These are the first published results that I have seen from the big questionnaire-based study that Larry Schor and others carried out, which many people here contributed to. Nothing particularly shocking to us, but very important that it's out in the medical community. Thank you, Larry and others!!!!
https://www.docguide.com/effectiveness-oxygen-and-other-acute-treatments-cluster-headache-results-cluster-headache-questionna?tsid=5