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Linares-Gonzalez, L., Ramos-Pleguezuelos, F. & Ruiz-Villaverde, R. sQUIZ your knowledge! Polycyclic annular plaques on the back of an elderly patient. Eur J Dermatol 29, 451–453 (2019). https://doi.org/10.1684/ejd.2019.3617
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DOI: https://doi.org/10.1684/ejd.2019.3617