All-cause mortality in patients with long-term opioid therapy compared with non-opioid analgesics for chronic non-cancer pain: a database study.
Winfried HäuserTino SchubertTobias VogelmannChristoph MaierMary-Ann FitzcharlesThomas TöllePublished in: BMC medicine (2020)
ClinicalTrials.gov, NCT03778450, Registered on 7 December 2018.