Affiliation: | 1. Department of Clinical Oncology, Block R, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong, People''s Republic of China;2. Department of Pathology, Block R, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong, People''s Republic of China;3. Department of Surgery, Block R, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong, People''s Republic of China;4. Department of Surgery, Kwong Wah Hospital, Hong Kong, People''s Republic of China |