@article {ioannidouserological,
	title = {Serological immunity against polioviruses among immigrant and refugee children arriving in Greece},
	year = {Submitted},
	author = {Ioannidou, C and Galanis, P and Voulgari-Kokkota, A and Bozas, E. and Mentis, A and Tsoumakas, K and Pavlopoulou, I D}
}
