title: The comparative frequency of extravasal injection at phlebography with steel and plastic cannula.
mesh_terms: D000497:Alloys; D002404:Catheterization / Q000295:instrumentation*; D003287:Contrast Media; D006801:Humans; D010690:Phlebography / Q000009:adverse effects*; D011138:Polytetrafluoroethylene; D014034:Toes / Q000098:blood supply
chemical_list: D000497:Alloys; D003287:Contrast Media; D011138:Polytetrafluoroethylene