Factors associated with the prescribing of high-dose opioids in primary care: a systematic review and meta-analysis.
Georgia C RichardsKamal R MahtaniTonny B MutheeNicholas J DeVitoConstantinos KoshiarisJeffrey K AronsonBen GoldacreCarl J HeneghanPublished in: BMC medicine (2020)
PROSPERO, CRD42018088057.