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2. The Merkel cell;Winkelmann;Invest Dermatol,1973
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4. Biology of disease: neuroendocrine (Merkel) cells of the skin: hyperplasias, dysplasias, and neoplasms;Gould;Lab Invest,1985
5. Merkel cell carcinoma-a problem with microscopically controlled surgery;Roenigk;J Dermatol Surg Oncol,1986