Affiliation: | 1.Laboratory of Public Health and Population Studies, Department of Molecular Medicine,University of Padua,Padua,Italy;2.Department of Medical Epidemiology and Biostatistics,Karolinska Institutet,Stockholm,Sweden;3.Department of Pediatrics,?rebro University Hospital,?rebro,Sweden;4.Friuli-Venezia Giulia Regional Health Information System,Informatica per il Sistema degli Enti Locali (INSIEL) S.p.A.,Udine,Italy;5.Epidemiological Service, Health Directorate,Friuli Venezia-Giulia Region,Udine,Italy |