Userfulness of blood and urine samples collected on filter paper in detecting cytomegalovirus by the polymerase chain reaction technique - Yamamoto, Aparecida Yulie; Mussi-Pinhata, Marisa Márcia; Pinto, Patrícia Cristina Gomes; Figueiredo, Luiz Tadeu Morais; Jorge, Salim Moyses (Journal of Virological Methods, 2001)