1. Department of Health Promotion, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) “G. D’Alessandro”, University of Palermo, 90127 Palermo, Italy
2. Department of Health Sciences, University of Genoa, 16132 Genoa, Italy
3. Food Hygiene and Nutrition Service, Department of Prevention, Local Health Unit 3, 16142 Genoa, Italy