Bröms, K. 2011. A nationwide study of asthma and allergy in Swedish preschool children with special reference to environment, daycare, prevalence, co-ocurrence and incidence. Socialmedicinsk tidskrift. 87, 5-6 (mar. 2011), 437. DOI:https://doi.org/10.62607/smt.v87i5-6.43940.