Authors: M P Andersen; P Bechsgaard; J Frederiksen; D A Hansen; H J Jürgensen; B Nielsen; F Pedersen; O Pedersen-Bjergaard; S L Rasmussen Journal: Lancet Date: 1979-10-27 Impact factor: 79.321
Authors: William A Ghali; Cameron R Donaldson; Merril L Knudtson; Steven J Lewis; Colleen J Maxwell; Jack V Tu Journal: CMAJ Date: 2003-07-08 Impact factor: 8.262