1 Department of Pathology, National University Health System, Singapore.
2 Department of Pathology and Laboratory Medicine, KK Women's and Children's Hospital, Singapore; Pathology Academic Clinical Programme, SingHealth Duke-NUS Medical School, Singapore.
3 Department of General Surgery, National University Health System, Singapore.
4 Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore.
5 Department of Pathology, National University Health System, Singapore; Department of Pathology and Laboratory Medicine, KK Women's and Children's Hospital, Singapore; Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. Electronic address: yingting_mok@nuhs.edu.sg.