Correction

Bailey and Kempner () mention that “the patent issued for the use of psilocybin as a therapy for cluster headache by the US Patent and Trademark Office fails to include the names of anyone affiliated with Clusterbusters ().” Sewell () draws upon Clusterbusters’ experience using psilocybin without citation but does not attempt to patent this knowledge. Schindler and D’Souza () is an example of a patent application filed for using psilocybin as a therapy for cluster headache that failed to include the names of anyone affiliated with Clusterbusters.