Dermatology Service, KK Women's & Children's Hospital, Singapore, Singapore
Woei-Kang Liew, MBBS, MRCPCH
Rheumatology and Immunology Service, Department of Paediatric Subspecialties, KK Women's & Children's Hospital, Singapore, Singapore
Mark Jean-Aan Koh, MBBS, MRCPCH
Dermatology Service, KK Women's & Children's Hospital, Singapore, Singapore; Correspondence to: Mark Jean-Aan Koh, MBBS, MRCPCH, Dermatology Service, KK Women's & Children's Hospital, 100 Bukit Timah Road, Singapore 229899, Singapore.