Rubella immunity and vaccination coverage of the population of northern Greece in 2006 Gioula, G and Fylaktou, A and Exindari, M and Atmatzidis, G and Chatzidimitriou, D and Melidou, A and Kyriazopoulou-Dalaina, V, Eurosurveillance, 12, 747 (2007), https://doi.org/10.2807/esm.12.11.00747-en