PT  - JOURNAL ARTICLE
AU  - J Pitts
AU  - M Whitby
TI  - Action thresholds.
DP  - 1990 Aug 01
TA  - British Journal of General Practice
PG  - 350--351
VI  - 40
IP  - 337
4099  - http://bjgp.org/content/40/337/350.short
4100  - http://bjgp.org/content/40/337/350.full
SO  - Br J Gen Pract1990 Aug 01; 40