Prevalence of canine heartworm (Dirofilaria immitis) disease in dogs of central PortugalAna Luísa Vieira, Maria João Vieira, João Manuel Oliveira, Ana Rita Simões, Pablo Diez-Baños and Juan GestalParasite, 21 (2014) 5DOI: https://doi.org/10.1051/parasite/2014003