Authors: L Goldman; D L Caldera; S R Nussbaum; F S Southwick; D Krogstad; B Murray; D S Burke; T A O'Malley; A H Goroll; C H Caplan; J Nolan; B Carabello; E E Slater Journal: N Engl J Med Date: 1977-10-20 Impact factor: 91.245
Authors: G T O'Connor; S K Plume; E M Olmstead; L H Coffin; J R Morton; C T Maloney; E R Nowicki; D G Levy; J F Tryzelaar; F Hernandez Journal: Circulation Date: 1992-06 Impact factor: 29.690