Burden of varicella in Central and Eastern Europe: findings from a systematic literature review oleh Zsófia Mészner, Jacek Wysocki, Darko Richter, Dace Zavadska, Inga Ivaskeviciene, Vytautas Usonis, Marko Pokorn, Atanas Mangarov, Ligita Jancoriene, Sorin C. Man, Zuzana Kristufkova, Milos Jesenak, Goran Tešović, Justyna Pluta, Lara J. Wolfson