PT - JOURNAL ARTICLE AU - MRP TI - Asthma AID - 10.1136/thx.47.7.576 DP - 1992 Jul 01 TA - Thorax PG - 576--576 VI - 47 IP - 7 4099 - http://thorax.bmj.com/content/47/7/576.1.short 4100 - http://thorax.bmj.com/content/47/7/576.1.full SO - Thorax1992 Jul 01; 47