Three research papers on MDMA-assisted psychotherapy were retracted by the journal Psychopharmacology due to protocol violations and unethical conduct by researchers at a study site. The authors were aware of the violations when submitting the articles but failed to disclose or remove the affected data. The papers were related to phase 2 randomized controlled trials for MDMA therapy with similar authors listed. Details of the violations were not specified in the retraction notices.
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