PT  - JOURNAL ARTICLE
AU  - William H. Barker
TI  - CLINICAL EPIDEMIOLOGY: THE ESSENTIALS
DP  - 1984 Apr 01
TA  - The Journal of the Royal College of General Practitioners
PG  - 226--226
VI  - 34
IP  - 261
4099  - http://bjgp.org/content/34/261/226.3.short
4100  - http://bjgp.org/content/34/261/226.3.full
SO  - J R Coll Gen Pract1984 Apr 01; 34