Authors: C S Peckham; R S Tedder; M Briggs; A E Ades; M Hjelm; A H Wilcox; N Parra-Mejia; C O'Connor Journal: Lancet Date: 1990-03-03 Impact factor: 79.321
Authors: P Hardelid; D Williams; C Dezateux; P A Tookey; C S Peckham; W D Cubitt; M Cortina-Borja Journal: Epidemiol Infect Date: 2008-02-25 Impact factor: 2.451