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APA Citation
Haddad, N., McNally, B. B., Al-Qaisi, M. T., Zucker, K., Sivakumar, A., Suchartlikitwong, S., Bayoumi, M., Aguon, P. M., & Sansone, N. (n.d.). s2072 Primary Malignant Melanoma of Esophagus: A Rare Cause of Esophageal Cancer. American journal of gastroenterology, 116, S895. http://access.bl.uk/ark:/81055/vdc_100144523488.0x00005c