1 Unit of Clinical Epidemiology & Biostatistic, Foundation IRCCS San Matteo Hospital, Pavia 27100, Italy.
2 Division of Infectious Diseases, Foundation IRCCS San Matteo Hospital, Italy; Department of Clinical, Surgical, Diagnostic and Pediatric Science, University of Pavia, Pavia 27100, Italy.
3 Medical Direction, Foundation IRCCS San Matteo Hospital, Pavia 27100, Italy.
4 Department of Clinical, Surgical, Diagnostic and Pediatric Science, University of Pavia, Pavia 27100, Italy; Research Center for Reproductive Medicine, Gynecological Endocrinology and Menopause, Obstetrics and Gynecology Unit, Foundation IRCCS San Matteo Hospital, Pavia 27100, Italy. Electronic address: renappi@tin.it.