RT Journal Article SR Electronic T1 Complete amelanotic acral nodular melanoma JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1231 OP E1231 DO 10.1503/cmaj.180304 VO 190 IS 41 A1 Xingyu Mei A1 Zhouwei Wu YR 2018 UL http://www.cmaj.ca/content/190/41/E1231.abstract