Enterococcus viikkiensis Rahkila et al. 2011 Rahkila R. Johansson P. Säde E. Björkroth J. Identification of enterococci from broiler products and a broiler processing plant and description of Enterococcus viikkiensis sp. nov. 2011 77 1196 1203 Applied and Environmental Microbiology Appl Environ Microbiol 0099-2240 1098-5336 10.1128/AEM.02412-10 21183650