| Hans-Günter Meyer-Thompson | Opioide
Tramadol versus placebo for chronic pain: a systematic review with meta-analysis and trial sequential analysis
Tramadol versus placebo for chronic pain: a systematic review with meta-analysis and trial sequential analysis
Barakji JA, Maagaard M, Petersen JJ, et al
BMJ Evidence-Based Medicine Published Online First: 07 October 2025. doi: 10.1136/bmjebm-2025-114101
https://ebm.bmj.com/content/early/2025/09/26/bmjebm-2025-114101