De Angelis Catherine, Drazen Jeffrey M, Frizelle Frank A, Haug Charlotte, Hoey John, Horton Richard, Kotzin Sheldon, Laine Christine, Marusic Ana, Overbeke A John P M, Schroeder Torben V, Sox Hal C, Van Der Weyden Martin B
CMAJ. 2004 Sep 14;171(6):606-7. doi: 10.1503/cmaj.1041281.