PT - JOURNAL ARTICLE AU - J Bousquet AU - J M Anto AU - J Heinrich AU - T Keil AU - D S Postma AU - J Sunyer TI - Correspondence on the paper by Krauss–Etschmann S, Bush A, Bellusci S, <em>et al</em>. AID - 10.1136/thoraxjnl-2013-203563 DP - 2013 Oct 01 TA - Thorax PG - 964--964 VI - 68 IP - 10 4099 - http://thorax.bmj.com/content/68/10/964.1.short 4100 - http://thorax.bmj.com/content/68/10/964.1.full SO - Thorax2013 Oct 01; 68