Preliminary report on an ongoing outbreak of hepatitis A in Estonia, 2011 Dontšenko, I and Kerbo, N and Pullmann, J and Plank, S and Võželevskaja, N and Kutsar, K, Eurosurveillance, 16, 19996 (2011), https://doi.org/10.2807/ese.16.42.19996-en