For citations:
Kiselev N.M., Bobrov N.V., Kuchin D.M., Torgomyan G.G., Shkalova L.V., Furman M.G., Zagainov V. . Primary malignant melanoma of the esophagus. Literature review and clinical case. Malignant tumours. 2019;9(4):42-48. (In Russ.) https://doi.org/10.18027/2224-5057-2019-9-4-42-48
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