Surveillance for hepatitis B virus infection in pregnant women in Greece shows high rates of chronic infection among immigrants and low vaccination-induced protection rates: preliminary results of a single center study Elefsiniotis, I S and Glynou, I and Zorou, I and Magaziotou, I and Brokalaki, H and Apostolopoulou, E and Vezali, E and Kada, H and Saroglou, G, Eurosurveillance, 14, 19132 (2009), https://doi.org/10.2807/ese.14.09.19132-en