Dadan 2011.

Methods	RCT
Participants	Patients with 'morbid obesity at least six months after surgical intervention'. Sample size unclear ‐ stated 45 patients 'qualified to the study'
Interventions	Laparoscopic adjustable gastric banding Roux‐en‐Y gastric bypass (not stated whether laparoscopic)
Outcomes	Timing of assessment not reported: Quality of life: based on Bariatric Analysis and Reporting Outcome System (BAROS) questionnaire. Result of surgical treatment of obesity (appears to be based on nominal classes ranging from 'excellent' to 'unsuccessful').
Notes