Harjen, Hannah. “In Dogs Bitten by the European Adder (Vipera Berus), Do Corticosteroids and Supportive Treatment Improve Clinical Outcome Compared to Supportive Treatment Alone?”. Veterinary Evidence 3, no. 3 (August 8, 2018). Accessed November 15, 2019. https://www.veterinaryevidence.org/index.php/ve/article/view/178.