TY - JOUR T1 - Controls in studies of magnetism JF - Canadian Medical Association Journal JO - CMAJ SP - 327 LP - 327-a DO - 10.1503/cmaj.1070163 VL - 178 IS - 3 AU - Max H. Pittler, MD PhD Y1 - 2008/01/29 UR - http://www.cmaj.ca/content/178/3/327.2.abstract ER -