Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong

The authors have no funding or conflicts of interest to disclose.

Reprints: Gary M. Tse, FRCPC, Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, Ngan Shing Street, Shatin, Hong Kong SAR (e-mail: [email protected]).