RT Journal Article SR Electronic T1 Imagined illnesses can cause real problems for medical students JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 820 OP 820 DO 10.1503/cmaj.080316 VO 178 IS 7 A1 Roger Collier YR 2008 UL http://www.cmaj.ca/content/178/7/820.abstract