Authors: C G Brilla; B Krämer; H M Hoffmeister; W Müller-Schauenburg; T Risler; L Seipel Journal: Cardiovasc Drugs Ther Date: 1989-04 Impact factor: 3.727
Authors: J N Cohn; G Johnson; S Ziesche; F Cobb; G Francis; F Tristani; R Smith; W B Dunkman; H Loeb; M Wong Journal: N Engl J Med Date: 1991-08-01 Impact factor: 91.245