European Society of Veterinary Oncology, Esvonc, 28 Mar 2019 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5807660/?fbclid=IwAR0Nu6VTd4yFlYfs2WkuH2gyU9CXX-URbXAY_dmBnZoDNU8tA0LYehaa8B4