Toxoplasma gondii in the peripheral blood of patients with acute and chronic toxoplasmosis - Silveira, Cláudio; Vallochi, Adriana Lima; Silva, Ulisses Rodrigues da; Muccioli, Cristina; Holland, Gary N.; Nussenblatt, Robert B.; Belfort, Rubens; Rizzo, Luiz Vicente (British Journal of Ophthalmology, 2011)