Long-term data are collected by approximately 30 German centers. An electronic Case-Report-Form (eCRF) was designed to collect relevant pre-specified items by the Clinical Trial Center North (CTC). All German sites that have implanted EndoBarrier® since 2010 were invited to provide patient results. Data-acquisition is projected to a period of 5 years and a maximum of 1000 patients. An extension of data-acquisition is planned.