RT Journal Article SR Electronic T1 Pulmonary tuberculosis with normal chest radiographs: report of eight cases JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 178 OP 180 VO 97 IS 4 A1 Schmidek, H. H. A1 Hardy, M. A. YR 1967 UL http://www.cmaj.ca/content/97/4/178.abstract