Clozapine in the Treatment of Obsessive-compulsive Symptoms in Schizophrenia Patients: A Case Series Study - Reznik, I; Yavin, I; Stryjer, R; Spivak, B; Gonen, N; Strous, R; Mester, R; Weizman, A; Kotler, M (Pharmacopsychiatry, 2004)