Authors: M M Suárez-Varela; A Llopis-González; J Bell; M Tallón-Guerola; A Pérez-Benajas; C Carrión-Carrión Journal: Eur J Epidemiol Date: 1999-10 Impact factor: 8.082
Authors: Tim Doran; Evangelos Kontopantelis; Jose M Valderas; Stephen Campbell; Martin Roland; Chris Salisbury; David Reeves Journal: BMJ Date: 2011-06-28