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MOHT staff will never ask you to transfer money or disclose bank log-in details over a phone call.

Assoc Prof Mark Koh Jean Aan (KKH)

Head & Senior Consultant, Dermatology Service, KK Women's and Children's Hospital, Deputy Campus Director, Medical Innovation and Care Transformation, Service Chief SingHealth Duke-NUS Vascular Centre

Last updated 19 February 2026
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