RT Journal Article SR Electronic T1 Koplik spots revisited JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.141656 DO 10.1503/cmaj.141656 A1 Xavier, Sheela A1 Forgie, Sarah E.D. YR 2015 UL http://www.cmaj.ca/content/early/2015/03/09/cmaj.141656.abstract AB