title: Case 2: A persistent hyperpigmented plaque on the neck.
authors.affiliation: Department of Family Medicine, University of British Columbia, Vancouver, British Columbia.
authors.forename: Jasna
authors.initials: J
authors.lastname: Levi
authors.affiliation: Department of Paediatrics, Department of Dermatology, University of British Columbia, Vancouver, British Columbia.
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Lam