"Sisley's Scottsdale Research Institute has been able to get approval to grow its own marijuana for study—the next cannabis-related work SRI plans is for cancer patients and Phase 2 of the PTSD trials coming sometime in 2022—but until Sisley's group gets its own strains up and running, she is using a more expensive alternative, importing cannabis from Canada, a legal alternative that not many people take due to the complexity and amount of time it takes for approval."