Authors
magdalena.rutkowska@imid.med.pl
Department of Epidemiology and Biostatistics, Institute of Mother and Child, Warsaw, Poland
Martyna Woynarowska
Neonatal Intensive Care Unit, Bielanski Hospital in Warsaw, Poland
Małgorzata Seroczyńska
Neonatal Outpatient Clinic, Institute of Mother and Child, Warsaw, Poland
Dariusz Mydlak
Clinic of Surgery of Children and Adolescent, Institute of Mother and Child, Warsaw, Poland
Ewa Nowakowska
Otolaryngology Clinic, Institute of Mother and Child, Warsaw, Poland
Krystyna Polak
Neonatal Outpatient Clinic, Institute of Mother and Child, Warsaw, Poland