Perspectives on the impact of varicella immunization on herpes zoster. A model-based evaluation from three European countries. - Poletti P; Melegaro A; Ajelli M; Del Fava E; Guzzetta G; Faustini L; Scalia Tomba G; Lopalco P; Rizzo C; Merler S; Manfredi P (PloS one, 2013)