Authors
Department for Neonatology, Prof. W Orlowski Independent Public Clinical Hospital, Centre of Postgraduate Medical Education, Warsaw, Poland
Wojciech Walas
Department for Anesthesiology and Intensive Care Unit for Children and Neonates, Clinical University Hospital, Opole, Poland
Joanna Stankiewicz
Anaesthesiology and Intensive Care Clinic, Institute of Mother and Child, Warsaw, Poland