Seroprevalence of feline leukemia virus and feline immunodeficiency virus infection among cats in North America and risk factors for seropositivity.
Levy JK, Scott HM, Lachtara JL, Crawford PC. J Am Vet Med Assoc. 2006 Feb 1;228(3):371-6. doi: 10.2460/javma.228.3.371. PMID: 16448357…