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   Dae-Lyong Ha et al, 2021, Clinical Medicine Insights: Oncology CrossRef
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   Carlos A. Galliani et al, 2020, Advances in Anatomic Pathology CrossRef
5. A Comparison of the Histopathologic Growth Patterns Between Non–Merkel Cell Small Round Blue Cell Tumors and Merkel Cell Carcinoma
   Justin P. Bandino et al, 2018, The American Journal of Dermatopathology CrossRef