Assessment of the duodenal-jejunal bypass sleeve (DJBS)/EndoBarrier, a 60 cm long impermeable sleeve-like device (fluoropolymer), placed endoscopically under general anaesthesia into the small intestine for up to 12 months.  (EUnetHTA WP5 Joint Action 2 Strand B, Rapid assessment of other health technologies such as medical devices, surgical interventions or diagnostics, Pilot ID: WP5-SB-11.)