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: P D Giles; S Ramachandran; A J Whitaker; A W Phillips; S J Fell; A Mitchell; T D Coleman Journal: Postgrad Med J Date: 1996-12 Impact factor: 2.401