Conditioned open-label placebos to facilitate opioid reduction in patients with chronic non-cancer pain: study protocol of a randomised controlled trial
Katja Carratta, Kiara Bodonyi, Antje Frey Nascimento, Daniel Friis, Roland von Känel, Lukas Bircher, Helen Koechlin, Michael Bernstein, Konrad Streitberger, Isabelle Arnet, Alfred Josef Roth, Joram Ronel, Elisabeth Olliges, Cosima Locher
BMJ Open May 2025, 15 (5) e098253; DOI: 10.1136/bmjopen-2024-098253