RT Journal Article SR Electronic T1 Half-and-half nail JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 687 OP 687 DO 10.1503/cmaj.081312 VO 180 IS 6 A1 Wen-Te Huang A1 Chia-Chao Wu YR 2009 UL http://www.cmaj.ca/content/180/6/687.abstract