Childs J E, Olson J G, Wolf A, Cohen N, Fakile Y, Rooney J A, Bacellar F, Regnery R L
Viral and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
Vet Rec. 1995 May 20;136(20):519-20. doi: 10.1136/vr.136.20.519.