Ueberall, M. A., Essner, U., & Mueller-Schwefe, G. H. (2019). Effectiveness and tolerability of THC: CBD oromucosal spray as add-on measure in patients with severe chronic pain: analysis of 12-week open-label real-world data provided by the German Pain e-Registry. J Pain Res.

Ueberall, Michael A., Ute Essner, a Gerhard HH Mueller-Schwefe. "Effectiveness and Tolerability of THC: CBD Oromucosal Spray As Add-on Measure in Patients With Severe Chronic Pain: Analysis of 12-week Open-label Real-world Data Provided By the German Pain E-Registry." J Pain Res 2019.

Ueberall, Michael A., Ute Essner, a Gerhard HH Mueller-Schwefe. "Effectiveness and Tolerability of THC: CBD Oromucosal Spray As Add-on Measure in Patients With Severe Chronic Pain: Analysis of 12-week Open-label Real-world Data Provided By the German Pain E-Registry." J Pain Res 2019.