PT - JOURNAL ARTICLE AU - J K Chege AU - H Chrystyn TI - AUTHORS' REPLY AID - 10.1136/thx.50.5.590-b DP - 1995 May 01 TA - Thorax PG - 590--591 VI - 50 IP - 5 4099 - http://thorax.bmj.com/content/50/5/590.3.short 4100 - http://thorax.bmj.com/content/50/5/590.3.full SO - Thorax1995 May 01; 50