1. Infectious Disease Unit, Meyer Children’s Hospital, Department of Science Health, University of Florence, Florence, Italy
2. Section of Oncology and Immunology, Department of Surgery, Oncology and Gastroenterology, Unit of viral Oncology and AIDS Reference Center, University of Padova, Padova, Italy
3. Department of Mother and Child Health, University of Padova, Padova, Italy
4. Istituto Oncologico Veneto IOV-IRCCS, Padova, Italy