1. 1 Department of Maternity. Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
2. 2 Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, University of Padua, Padua, Italy
3. 3 Azienda Ospedaliera Universitaria Sant'Orsola-Malpighi, Bologna, Italy
4. 4 Azienda Ospedaliero-Universitaria Careggi di Firenze, Florence, Italy
5. 5 Laboratory of Nursing Studies, Public Health Section, Department of Medicine, University of Padova, Padua, Italy