%0 Journal Article %T Willingness to Participate in Longitudinal Research Among People with Chronic Pain Who Take Medical Cannabis: A Cross-Sectional Survey %A Chinazo O. Cunningham %A Joanna L. Starrels %A Julia H. Arnsten %A Marcus A. Bachhuber %J Archive of "Cannabis and Cannabinoid Research". %D 2018 %R 10.1089/can.2017.0051 %X Background: Regulatory barriers limit clinical trials of medical cannabis in the United States. Longitudinal cohort studies may be one feasible alternative that could yield clinically relevant information. Willingness to participate in such studies is not known %K medical marijuana %K marijuana %K chronic pain %K cohort studies %K analgesics %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5870058/