Letter to the EditorMerkel cell carcinoma: an illustrative case and review - Marek, Luiza; Grzanka, Aleksandra; Chmielowska, Ewa; Jankowski, Marek; Schwartz, Robert A.; Czajkowski, Rafał (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2014)