Randomization and blinding
WBH
A computer-generated randomization list provided to the study by the Arizona Statistics Consulting Laboratory was used to randomize participants with a one-to-one allocation in blocks of six to a single treatment of WBH or a sham WBH condition. This list was kept by a Psychiatry Department administrator who had no contact with study participants and no other role in the study. Participants remained blinded to their randomization status until completion of the last study assessment at post-treatment week 6.