1. Department of Pediatrics, University of Trieste, Trieste, Italy.
2. Epidemiology and Biostatistics Unit, Institute for Maternal and Child Health “Burlo Garofolo,” Trieste, Italy.
3. Italian Network of Trainers in Breastfeeding (RIFAM), Trieste, Italy.
4. Division of Neonatology, Institute for Maternal and Child Health “Burlo Garofolo,” Trieste, Italy.