Metastatic Merkel cell carcinoma and myasthenia gravis: contraindication for therapy with immune checkpoint inhibitors? ======================================================================================================================= * Anne Zaremba * Eleftheria Chorti * Finja Jockenhöfer * Saskia Bolz * Selma Sirin * Martin Glas * Jürgen C. Becker * Selma Ugurel * Alexander Roesch * Dirk Schadendorf * Elisabeth Livingstone * Tim Hagenacker * Lisa Zimmer