Authors: T G Mayer; R J Gatchel; N Kishino; J Keeley; P Capra; H Mayer; J Barnett; V Mooney Journal: Spine (Phila Pa 1976) Date: 1985 Jul-Aug Impact factor: 3.468
Authors: C E Dionne; M Von Korff; T D Koepsell; R A Deyo; W E Barlow; H Checkoway Journal: J Epidemiol Community Health Date: 2001-07 Impact factor: 3.710