The goals of the study are to compare the effectiveness of CBT4BN to traditional CBT in reducing bulimia and if the attrition rate (rate of dropout) will decrease. Follow-ups after the study has ended will be at 3, 6, and 12 months. The hope is that if the CBT4BN is effective, it will allow individuals who do not have access or have difficulties with standard CBT to receive treatment.
I believe this study is still recruiting, so if you're interested, it may be worthwhile.
More information here.