PT - JOURNAL ARTICLE AU - D M Geddes TI - Commentary AID - 10.1136/thx.50.12.1323 DP - 1995 Dec 01 TA - Thorax PG - 1323--1323 VI - 50 IP - 12 4099 - http://thorax.bmj.com/content/50/12/1323.short 4100 - http://thorax.bmj.com/content/50/12/1323.full SO - Thorax1995 Dec 01; 50