aDepartment of Pediatrics, Obstetrics and Reproductive Medicine, Section of Obstetrics and Gynecology, University of Siena, Siena
bU.O.C. Gynecology and Obstetrics, ‘San Giuseppe’ Hospital, Empoli
cDepartment of Gynecology and Obstetrics, S. Orsola-Malpighi, University of Bologna, Bologna
dPalagi Free-standing Unit, Florence
eMadre Fortunata Toniolo Hospital, Bologna, Italy
Correspondence to Pasquale Florio, PhD, MD, Department of Pediatrics, Obstetrics and Reproductive Medicine, Section of Obstetrics and Gynecology, University of Siena, Policlinico ‘Le Scotte’, Viale Bracci, 53100 Siena, Italy. Tel: +39 0571 485342; fax: +39 0571497986; e-mail: [email protected]