Dias, A. R.; Sallum, R. A. A.; Zalc, N.; Ctenas, B. B.; Ribeiro Jr, U.; Cecconello, I. Squamous Cell Carcinoma and Neuroendocrine Carcinoma Colliding in the Esophagus . Clinics 2010, 65 (1), 114-117. https://doi.org/10.1590/S1807-59322010000100018.