LEANDER M., LAMPA E., JANSON C., SVÄRDSUDD K., UDDENFELDT M., and RASK-ANDERSEN A. “Determinants for a Low Health-Related Quality of Life in Asthmatics”. Upsala Journal of Medical Sciences, vol. 117, no. 1, Dec. 2011, pp. 57–66, doi:10.3109/03009734.2011.638730.