Withdrawal-associated relapse is a potential source of bias

Affiliations

• ¹ Division of Psychiatry, University College London, London W1T 7BN, UK; North East London Foundation Trust, Goodmayes Hospital, Ilford, UK. Electronic address: m.horowitz@ucl.ac.uk.
• ² Institute of Psychiatry, King's College London, London, UK.
• ³ Institute of Psychiatry, King's College London, London, UK; South London and Maudsley NHS Foundation Trust, Pharmacy Department, London, UK.