PT - JOURNAL ARTICLE ED - , TI - TB incidence declines in US DP - 1997 Jun 15 TA - Canadian Medical Association Journal PG - 1691--1691 VI - 156 IP - 12 4099 - http://www.cmaj.ca/content/156/12/1691.4.short 4100 - http://www.cmaj.ca/content/156/12/1691.4.full SO - CMAJ1997 Jun 15; 156