Increased prevalence of symptoms of rhinitis but not of asthma between 1990 and 2008 in Swedish adults: comparisons of the ECRHS and GA2LEN surveys

Bjerg A, Ekerljung L, Middelveld R, Dahlén S-E, Forsberg B, Franklin K, Larsson K, Lötvall J, Olafsdóttir IS, Torén K, Lundbäck B, Janson C. Increased prevalence of symptoms of rhinitis but not of asthma between 1990 and 2008 in Swedish adults: comparisons of the ECRHS and GA2LEN surveys. PLoS One. 2011; 6(2): e16082.