title: Case 1: Hyperpigmented swirly patches in a toddler.
authors.affiliation: BC Children's Hospital, University of British Columbia.
authors.forename: Gaby
authors.initials: G
authors.lastname: Yang
authors.affiliation: Department of Pediatrics, University of British Columbia, Vancouver, British Columbia.
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Lam