RT Journal Article SR Electronic T1 Necrotic pulmonary nodules in secondary syphilis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E163 OP E166 DO 10.1503/cmaj.091479 VO 183 IS 3 A1 Janine B. McCready A1 Roland Skrastins A1 James F. Downey A1 Jeff E. Powis YR 2011 UL http://www.cmaj.ca/content/183/3/E163.abstract