RT Journal Article SR Electronic T1 Brown birthmarks JF Archives of disease in childhood - Education & practice edition JO Arch Dis Child Educ Pract Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 171 OP 172 DO 10.1136/archdischild-2012-303622 VO 98 IS 5 A1 Peter A Lio A1 Kachiu C Lee YR 2013 UL http://ep.bmj.com/content/98/5/171.abstract AB