Authors: R M Lowenthal; L Grossman; J M Goldman; R A Storring; N A Buskard; D S Park; B C Murphy; A S Spiers; D A Galton Journal: Lancet Date: 1975-02-15 Impact factor: 79.321
Authors: W T Hughes; S Kuhn; S Chaudhary; S Feldman; M Verzosa; R J Aur; C Pratt; S L George Journal: N Engl J Med Date: 1977-12-29 Impact factor: 91.245