RT Journal Article SR Electronic T1 Gottron papules: a pathognomonic sign of dermatomyositis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 148 OP 148 DO 10.1503/cmaj.111791 VO 185 IS 2 A1 Federica Ricceri A1 Francesca Prignano YR 2013 UL http://www.cmaj.ca/content/185/2/148.abstract AB