https://www.cochrane.org/fr/CD013132/EPILEPSY_traitement-pharmacologique-du-syndrome-des-pointes-ondes-continues-pendant-le-sommeil-lent-et-le 2020 France United Kingdom review of literature french abstract persistent pharmacology pointer syndrome non-rapid eye movement sleep landau-kleffner syndrome drug therapy Sleep, Slow-Wave pharmacologist Landau-Kleffner syndrome pharmacology abnormalities, multiple Feeding and Eating Disorders bone diseases, developmental limb deformities, congenital craniofacial abnormalities