● Willi B,Boretti FS,Baumgartner C,Tasker S,Wenger B,Cattori V,Meli ML,Reusch CE,Lutz H,Hofmann-Lehmann R (2006). Prevalence, risk factor analysis, and follow-up of infections caused by three feline hemoplasma species in cats in Switzerland. J. Clin. Microbiol.44, 961-9.