1 Section of Neonatology, Department of Pediatrics, Alberta Health Services, University of Calgary, Cumming School of Medicine, Calgary, Canada.
2 University of Calgary, Cumming School of Medicine, Libin Cardiovascular Institute of Alberta, Calgary, Canada.
3 University of Calgary, Cumming School of Medicine, Libin Cardiovascular Institute of Alberta, Calgary, Canada. Amelie.Stritzke@albertahealthservices.ca.