1. Department of Anesthesiology University of Colorado School of Medicine Aurora Colorado USA
2. The Lambert Center for the Study of Medicinal Cannabis and Hemp, The Institute for Emerging Health Professions Thomas Jefferson University Philadelphia Pennsylvania USA
3. Department of Medicine University of Colorado School of Medicine Aurora Colorado USA
4. Department of Surgery University of Colorado School of Medicine Aurora Colorado USA
5. Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences University of Colorado Aurora Colorado USA