Regression of Multiple Melanocytic Nevi in Two Patients on Nivolumab for Metastatic Melanoma - Baeza-Hernández, Gloria; Rubio-Aguilera, Ricardo Francisco; Garrido-Ríos, Anastasia Alejandra; Álvarez-Garrido, Helena; Martínez-Morán, Cristina; Borbujo, Jesús (Dermatology Practical & Conceptual, 2023)