Prevalence of Dirofilaria immitis among shelter dogs in Tokyo, Japan, after a decade: comparison of 1999–2001 and 2009–2011Masaaki Oi, Souichi Yoshikawa, Yasuaki Ichikawa, Kazuhide Nakagaki, Jun Matsumoto and Sadao NogamiParasite, 21 (2014) 10DOI: https://doi.org/10.1051/parasite/2014008