Homozygous loss of CHRNA7 on chromosome 15q13.3 causes severe encephalopathy with seizures and hypotonia - Endris, Volker; Hackmann, Karl; Neuhann, Teresa M.; Grasshoff, Ute; Bonin, Michael; Haug, Ulrich; Hahn, Gabriele; Schallner, Jens C.; Schröck, Evelin; Tinschert, Sigrid; Rappold, Gudrun; Moog, Ute (American journal of medical genetics, 2010)