title: Percutaneous transluminal coronary angioplasty--still an investigational procedure.
mesh_terms: D002404:Catheterization; D003327:Coronary Disease / Q000601:surgery*; D003331:Coronary Vessels / Q000601:surgery; D004106:Dilatation / Q000379:methods; D006801:Humans; D013679:Technology, Radiologic