title: Letter: The slippery knot syndrome.
mesh_terms: D001014:Aortic Aneurysm / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011138:Polytetrafluoroethylene / Q000009:adverse effects; D013514:Surgical Procedures, Operative / Q000009:adverse effects*; D013537:Sutures / Q000592:standards
chemical_list: D011138:Polytetrafluoroethylene