PT  - JOURNAL ARTICLE
AU  - J A Kopec
AU  - J M Esdaile
TI  - Bias in case-control studies. A review.
AID  - 10.1136/jech.44.3.179
DP  - 1990 Sep 01
TA  - Journal of Epidemiology and Community Health
PG  - 179--186
VI  - 44
IP  - 3
4099  - http://jech.bmj.com/content/44/3/179.short
4100  - http://jech.bmj.com/content/44/3/179.full
SO  - J Epidemiol Community Health1990 Sep 01; 44