Authors: D R Holmes; G S Reeder; Z M Ghazzal; J F Bresnahan; S B King; M B Leon; F Litvack Journal: J Am Coll Cardiol Date: 1994-02 Impact factor: 24.094
Authors: J S Sra; A J Anderson; S H Sheikh; B Avitall; P J Tchou; P J Troup; C J Gilbert; M Akhtar; M R Jazayeri Journal: Ann Intern Med Date: 1991-06-15 Impact factor: 25.391