Erratum to: Special Issue: European clinical guidelines for Tourette Syndrome and other tic disorders

Roessner, V; Plessen, Kj; Rothenberger, A; Ludolph, Ag; Rizzo, R; Skov, L; Strand, G; Stern, Js; Termine, Cristiano; Hoekstra, Pj; Group, ESSTS G. u. i. d. e. l. i. n. e. s.