PT  - JOURNAL ARTICLE
AU  - J. David
TI  - Do drug copayments work?
DP  - 1994 May 01
TA  - Canadian Medical Association Journal
PG  - 1491--1493
VI  - 150
IP  - 9
4099  - http://www.cmaj.ca/content/150/9/1491.short
4100  - http://www.cmaj.ca/content/150/9/1491.full
SO  - CMAJ1994 May 01; 150