Authors: B V Bock; B D Kirby; P H Edelstein; W L George; K M Snyder; M L Owens; C M Hatayama; C E Haley; R P Lewis; R D Meyer; S M Finegold Journal: Lancet Date: 1978-02-25 Impact factor: 79.321
Authors: D W Fraser; T R Tsai; W Orenstein; W E Parkin; H J Beecham; R G Sharrar; J Harris; G F Mallison; S M Martin; J E McDade; C C Shepard; P S Brachman Journal: N Engl J Med Date: 1977-12-01 Impact factor: 91.245