Authors: J E Ware; R H Brook; W H Rogers; E B Keeler; A R Davies; C D Sherbourne; G A Goldberg; P Camp; J P Newhouse Journal: Lancet Date: 1986-05-03 Impact factor: 79.321
Authors: Karen B Farris; Isabelle Côté; David Feeny; Jeffrey A Johnson; Ross T Tsuyuki; Sandra Brilliant; Sherry Dieleman Journal: Can Fam Physician Date: 2004-07 Impact factor: 3.275