title: Erratum to: Widening Phenotypic Spectrum of AADC Deficiency, a Disorder of Dopamine and Serotonin Synthesis.
authors.affiliation: Department of Neurology, Children's National Medical Center, Washington, DC, USA.
authors.forename: Guy
authors.initials: G
authors.lastname: Helman
authors.forename: Maria Belen
authors.initials: MB
authors.lastname: Pappa
authors.forename: Phillip L
authors.initials: PL
authors.lastname: Pearl