Cavaliero T, Arnold P, Mathis A, Glaus T, Hofmann-Lehmann R, Deplazes P. Clinical, serologic, and parasitologic follow-up after long-term allopurinol therapy of dogs naturally infected with Leishmania infantum. J Vet Intern Med. 1999 Jul;13(4):330–4. doi: 10.1892/0891-6640(1999)013<0330:csapfu>2.3.co;2. PMID: 10449224.