Lack of Association of Group A Streptococcal Infections and Onset of Tics: European Multicenter Tics in Children Study.

Schrag AE, Martino D, Wang H, Ambler G, Benaroya-Milstein N, Buttiglione M, Cardona F, Creti R, Efstratiou A, Hedderly T, Heyman I, Huyser C, Mir P, Morer A, Moll N, Müller NE, Müller-Vahl KR, Plessen KJ, Porcelli C, Rizzo R, Roessner V, Schwarz M, Tarnok Z, Walitza S, Dietrich A, Hoekstra PJ; European Multicentre Tics in Children Study (EMTICS).