Authors: B N Laerum; C Svanes; A Gulsvik; M Iversen; H R Thorarinsdottir; T Gislason; R Jögi; E Norrman; M Gunnbjörnsdottir; T Wentzel-Larsen; C Janson; E Omenaas Journal: Respir Med Date: 2004-07 Impact factor: 3.415
Authors: Malcolm R Sears; Justina M Greene; Andrew R Willan; Elizabeth M Wiecek; D Robin Taylor; Erin M Flannery; Jan O Cowan; G Peter Herbison; Phil A Silva; Richie Poulton Journal: N Engl J Med Date: 2003-10-09 Impact factor: 91.245