Authors: A L Siu; E A McGlynn; H Morgenstern; M H Beers; D M Carlisle; E B Keeler; J Beloff; K Curtin; J Leaning; B C Perry Journal: Health Serv Res Date: 1992-12 Impact factor: 3.402
Authors: M A Martínez-González; J Fernández-García; F Sánchez-Izquierdo; P Lardelli-Claret; J Jiménez Moléon; R Gálvez-Vargas Journal: Eur J Epidemiol Date: 1998-09 Impact factor: 8.082