RT Journal Article SR Electronic T1 And then they took away the pigeon holes JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 444 OP 444 DO 10.1503/cmaj.090052 VO 181 IS 6-7 A1 Guido Van Rosendaal YR 2009 UL http://www.cmaj.ca/content/181/6-7/444.abstract