Affiliation: | 1. Department of Medical Surgical Sciences, Division of Obstetrics and Prenatal Medicine, St. Orsola Malpighi Hospital, University of Bologna, Bologna, Italy;2. Department of Specialised, Experimental, and Diagnostic Medicine, Division of Microbiology and Virology, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy;3. Department of Medical Surgical Sciences, Division of Neonatology, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy |