Authors: P R Manning; W A Clintworth; L M Sinopoli; J P Taylor; P C Krochalk; N J Gilman; T A Denson; D L Stufflebeam; M S Knowles Journal: Ann Intern Med Date: 1987-12 Impact factor: 25.391
Authors: Richard P T M Grol; Marije C Bosch; Marlies E J L Hulscher; Martin P Eccles; Michel Wensing Journal: Milbank Q Date: 2007 Impact factor: 4.911