Authors: G Brown; J J Albers; L D Fisher; S M Schaefer; J T Lin; C Kaplan; X Q Zhao; B D Bisson; V F Fitzpatrick; H T Dodge Journal: N Engl J Med Date: 1990-11-08 Impact factor: 91.245
Authors: R H Bradford; C L Shear; A N Chremos; C Dujovne; M Downton; F A Franklin; A L Gould; M Hesney; J Higgins; D P Hurley Journal: Arch Intern Med Date: 1991-01