Public health preparedness for two mass gathering events in the context of pandemic influenza (H1N1) 2009 - Serbia, July 2009 Loncarevic, G and Payne, L and Kon, P and Petrovic, V and Dimitrijevic, D and Knezevic, T and Medić, S and Milic, N and Nedelijković, J and Seke, K and Coulombier, D, Eurosurveillance, 14, 19296 (2009), https://doi.org/10.2807/ese.14.31.19296-en