GABRB2 and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy: Correction to: Dravet syndrome-associated mutations in <i>GABRA1</i>, <i>GABRB2</i> and <i>GABRG2</i> define the genetic landscape of defects of GABA<sub>A</sub> receptors.