Cita APA

Petzke, F., Bock, F., Hüppe, M., Nothacker, M., Norda, H., Radbruch, L., . . . Häuser, W. (2020). Long-term opioid therapy for chronic noncancer pain: Second update of the German guidelines. Pain Rep.

Chicago Style Citation

Petzke, Frank, et al. "Long-term Opioid Therapy for Chronic Noncancer Pain: Second Update of the German Guidelines." Pain Rep 2020.

Cita MLA

Petzke, Frank, et al. "Long-term Opioid Therapy for Chronic Noncancer Pain: Second Update of the German Guidelines." Pain Rep 2020.