Serum antibodies to Toxoplasma gondii and Herpesvidae family viruses in individuals with schizophrenia and bipolar disorder: a case-control study. - Tedla Y; Shibre T; Ali O; Tadele G; Woldeamanuel Y; Asrat D; Aseffa A; Mihret W; Abebe M; Alem A; Medhin G; Habte A (Ethiopian medical journal, 2011)