Beffagna, G, Sammarco, A, Bedin, C, Romualdi, C, Mainenti, M, Mollo, A, Cavicchioli, L, Ferro, S, Trez, D, De Maria, R, Nitti, D, Saccani, A, Campanella, M, Agostini, M, Zappulli, V, "Circulating Cell-Free DNA in Dogs with Mammary Tumors: Short and Long Fragments and Integrity Index", PLoS ONE, 2017