RT Journal Article SR Electronic T1 A pituitary mass as consequence of a decimal error in levothyroxine dose JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 210 OP 210 DO 10.1503/cmaj.111883 VO 184 IS 2 A1 Clemens, Kristin A1 Van Uum, Stan YR 2012 UL http://www.cmaj.ca/content/184/2/210.abstract