1. Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland2Child Development Center, University Children’s Hospital Zurich, Zurich, Switzerland
2. Child Development Center, University Children’s Hospital Zurich, Zurich, Switzerland
3. Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
4. Epidemiology, Biostatistics and Prevention Institute (EBPI), University of Zurich, Zurich, Switzerland