RT Journal Article SR Electronic T1 Hyperpigmentation in Laugier–Hunziker syndrome JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1402 OP 1402 DO 10.1503/cmaj.110211 VO 183 IS 12 A1 Dong-Lai Ma A1 Sergio Vano-Galvan YR 2011 UL http://www.cmaj.ca/content/183/12/1402.abstract