Corneal Infantile Myofibromatosis Caused by Novel Activating Imatinib-Responsive Variants in PDGFRB oleh Antonia Howaldt, MD, Sandrine Lenglez, BSc, Clara Velmans, MD, Anne Maria Schultheis, MD, Thomas Clahsen, PhD, Mario Matthaei, MD, Jürgen Kohlhase, MD, Christian Vokuhl, MD, Reinhard Büttner, MD, Christian Netzer, MD, Jean-Baptiste Demoulin, PhD, Claus Cursiefen, MD, PhD