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, 16 Tallinn Children's Hospital, p.21

, 23 Neonatal Intensive Care Unit, Department of Obstetrics and Paediatrics, S. Maria Nuova Hospital, IRCCS, Reggio Emilia, Italy. 24 Department for Mother's and Infant's Health, Hospital San Giovanni Calibita -Fatebenefratelli

, 34 Clinical Epidemiology Unit, Department of Medicine Solna; Department of Women's and Children's Health, Karolinska Institutet, Wilhelmina Children's Hospital