PT  - JOURNAL ARTICLE
AU  - A N J Graham
AU  - JA McGuigan
TI  - AUTHORS' REPLY
AID  - 10.1136/thx.47.12.1086-b
DP  - 1992 Dec 01
TA  - Thorax
PG  - 1086--1086
VI  - 47
IP  - 12
4099  - http://thorax.bmj.com/content/47/12/1086.3.short
4100  - http://thorax.bmj.com/content/47/12/1086.3.full
SO  - Thorax1992 Dec 01; 47