Letter: Alert re Medic Alert.
D003250:Constriction; D004633:Emergency Medical Tags / Q000009:adverse effects*; D004864:Equipment and Supplies / Q000009:adverse effects*; D005542:Forearm / Q000098:blood supply*; D006801:Humans; D010689:Phlebitis / Q000209:etiology*; D014689:Venous Insufficiency / Q000209:etiology*