%0 Journal Article %A P Van Cauwenberge %A J B Watelet %T Epidemiology of chronic rhinosinusitis %D 2000 %R 10.1136/thorax.55.suppl_2.S20 %J Thorax %P S20-S21 %V 55 %N suppl 2 %U https://thorax.bmj.com/content/thoraxjnl/55/suppl_2/S20.full.pdf