Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichiaequi and ‚HGE agent’ as subjective synonyms of Ehrlichiaphagocytophila - Dumler, JS; Barbet, AF; Bekker, CP; Dasch, GA; Palmer, GH; Tay, SC; Rikihisa, Y; Rurangirwa, FR (Int J Syst Evol Microbiol, 2001)