Authors: S D Williams; D M Stablein; L H Einhorn; F M Muggia; R B Weiss; J P Donohue; D F Paulson; K W Brunner; E M Jacobs; J T Spaulding Journal: N Engl J Med Date: 1987-12-03 Impact factor: 91.245
Authors: E W Steyerberg; H J Keizer; J Zwartendijk; G L Van Rijk; C J Van Groeningen; J D Habbema; G Stoter Journal: Br J Cancer Date: 1993-07 Impact factor: 7.640