Authors: J P Mohr; J L Thompson; R M Lazar; B Levin; R L Sacco; K L Furie; J P Kistler; G W Albers; L C Pettigrew; H P Adams; C M Jackson; P Pullicino Journal: N Engl J Med Date: 2001-11-15 Impact factor: 91.245
Authors: Elliott S Fisher; David E Wennberg; Thérèse A Stukel; Daniel J Gottlieb; F L Lucas; Etoile L Pinder Journal: Ann Intern Med Date: 2003-02-18 Impact factor: 25.391