Delta Air Lines teamed up with the Mayo Clinic and Georgia Department of Health on the study.
The research, led by Minnesota-based HealthPartners Institute, was published Thursday.
The 4-week-old wolf's howl is not quiet.
The table-top size ventilator can now be manufactured for distribution.
It follows a survey of 751 patients with PTSD.
Leafline Labs is launching a topical medicated cream.