PT - JOURNAL ARTICLE AU - G. Basky TI - Longer warfarin treatment cuts risk of repeat clots DP - 1999 Jun 15 TA - Canadian Medical Association Journal PG - 1692--1692 VI - 160 IP - 12 4099 - http://www.cmaj.ca/content/160/12/1692.2.short 4100 - http://www.cmaj.ca/content/160/12/1692.2.full SO - CMAJ1999 Jun 15; 160