Authors: J S Smolen; J R Kalden; D L Scott; B Rozman; T K Kvien; A Larsen; I Loew-Friedrich; C Oed; R Rosenburg Journal: Lancet Date: 1999-01-23 Impact factor: 79.321
Authors: M E Weinblatt; J M Kremer; A D Bankhurst; K J Bulpitt; R M Fleischmann; R I Fox; C G Jackson; M Lange; D J Burge Journal: N Engl J Med Date: 1999-01-28 Impact factor: 91.245