Difficult-to-treat Epilepsies in Children with SMC1A Mutations without Facial Abnormalities: An “Atypical Cornelia-de-Lange Syndrome“? – Five More Cases - Kyoseva, Mariya; Kluger, Gerhard; Berger, Andrea; Staudt, Martin; Haberlandt, Edda; Betzler, Cornelia; Pringsheim, Milka (Neuropediatrics, 2019)