1. Lam KY, Ma LT, Wong J (1996) Measurement of extent of spread of oesophageal squamous carcinoma by serial sectioning. J Clin Pathol 49:124–129
2. Lam AK, Kumarasinghe MP (2019) Adenocarcinoma of the oesophagus and oesophagogastric junction NOS. In: Odze RD, Lam AK, Ochiai A, Washington MK (eds) WHO classification of tumours, 5th edn, pp 38–43, Chapter 2
3. Lam KY, Law S, Tung PH, Wong J (2000) Esophageal small cell carcinomas: clinicopathologic parameters, p53 overexpression, proliferation marker, and their impact on pathogenesis. Arch Pathol Lab Med 124:228–233
4. Ng HY, Li J, Tao L, Lam AK, Chan KW, Ko JM, Yu VZ, Wong M, Li B, Lung ML (2018) Chemotherapeutic treatments increase PD-L1 expression in esophageal squamous cell carcinoma through EGFR/ERK activation. Transl Oncol 11:1323–1333
5. Patel SP, Kurzrock R (2015) PD-L1 expression as a predictive biomarker in cancer immunotherapy. Mol Cancer Ther 14:847–856