RT Journal Article SR Electronic T1 More placebo use promoted in Germany JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E633 OP E634 DO 10.1503/cmaj.109-3895 VO 183 IS 10 A1 Kai Kupferschmidt YR 2011 UL http://www.cmaj.ca/content/183/10/E633.abstract