1. Division of Neonatology, Department of Paediatrics and Adolescent Medicine, Medical University of Graz, Auenbruggerplatz 30, 8036 Graz, Austria
2. Research Group for Paediatric Traditional Chinese Medicine, TCM Research Centre Graz (Acupuncture Research), Medical University of Graz, Auenbruggerplatz 30, 8036 Graz, Austria
3. Institute for Medical Informatics, Statistics and Documentation, Auenbruggerplatz 2, 8036 Graz, Austria