Cross-sectional study of the seroprevalence to Borrelia burgdorferi sensu lato and granulocytic Ehrlichia spp. and demographic, clinical and tick-exposure factors in Swedish horses - Egenvall, A; Franzen, P; Gunnarsson, A; Engvall, EO; Vagsholm, I; Wikstrom, UB; Artursson, K (Prev Vet Med, 2001)
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