Bariatric surgery.
D002983:Clinical Competence; D003406:Credentialing / Q000592:standards*; D015391:Gastroplasty; D006801:Humans; D008504:Medical Staff Privileges / Q000592:standards*; D009938:Organizations; D013270:Stomach / Q000601:surgery; D017792:Surgical Stapling / Q000592:standards; D014481:United States