RT Journal Article SR Electronic T1 Fibromyalgia: evolving concepts over the past 2 decades JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.121414 DO 10.1503/cmaj.121414 A1 Fitzcharles, Mary-Ann A1 Ste-Marie, Peter A. A1 Pereira, John X. YR 2013 UL http://www.cmaj.ca/content/early/2013/05/15/cmaj.121414.abstract AB