RT Journal Article SR Electronic T1 Tuberculosis: 3. Epidemiology of the disease in Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1185 OP 1190 VO 160 IS 8 A1 R. Long A1 H. Njoo A1 E. Hershfield YR 1999 UL http://www.cmaj.ca/content/160/8/1185.abstract AB