Tic-Related Versus Tic-Free Obsessive-Compulsive Disorder: Clinical Picture and 2-Year Natural Course.

Vries F.E. de, Cath D.C., Hoogendoorn A.W., Oppen P. van, Glas G., Veltman D.J., Heuvel O.A. van den, Balkom A.J.L.M. van.  The Journal of Clinical Psychiatry, 2016 (77). nr. 10, pag. e1240-e1247