Surveillance of antimicrobial resistance of invasive pathogens: the Estonian experience Loivukene, K and Kermes, K and Sepp, E and Adamson, V and Mitt, P and Kallandi, Ü and Otter, K and Naaber, P and on behalf of the European Antimicrobial Resistance Surveillance System, Estonian Study Group, Eurosurveillance, 11, 601 (2006), https://doi.org/10.2807/esm.11.02.00601-en