[Telemedical Franconian Obesity Aftercare Therapy (Tele-FANT) Results of a Formative Evaluation].

Introduction: Following rehabilitation, patients are often unable to continue with the behavioral changes they had learned there in the long term. It is therefore important to offer aftercare services to improve self-management. Internet-based and telephone aftercare concepts in particular are low-cost and flexible in application, and offer an opportunity to significantly increase the use of aftercare measures.