Authors: J C Sibley; W O Spitzer; K V Rudnick; J D Bell; R D Bethune; D L Sackett; K Wright Journal: Ann Intern Med Date: 1975-07 Impact factor: 25.391
Authors: M I Lindsay; F T Nobrega; K P Offord; E T Carter; B D Rutherford; A J Kennel; H T Mankin Journal: Mayo Clin Proc Date: 1977-04 Impact factor: 7.616