Authors: R N Battista; J I Williams; J Boucher; E Rosenberg; S J Stachenko; J Adam; C Levinton; S Suissa Journal: CMAJ Date: 1991-06-01 Impact factor: 8.262
Authors: E Dunn; J I Williams; A M Bryans; D Davis; T Delmore; A Herron; J Krauser; D J Scott Journal: Can Fam Physician Date: 1982-07 Impact factor: 3.275
Authors: G G Page; J Bates; S M Dyer; D R Vincent; G Bordage; A Jacques; A Sindon; T Kaigas; G R Norman; M Kopelow Journal: CMAJ Date: 1995-12-15 Impact factor: 8.262