The Importance of Complementary PCR Analysis in Addition to Serological Testing for the Detection of Transmission Sources of <i>Brucella</i> spp. in Greek Ruminants oleh Anthimia Batrinou, Irini F. Strati, Andreas G. Tsantes, Joseph Papaparaskevas, Ioannis Dimou, Dimitrios Vourvidis, Anna Kyrma, Dionysis Antonopoulos, Panagiotis Halvatsiotis, Dimitra Houhoula