1. Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.
2. Centro Hospital Alto Ave-EPE, Guimarães, Portugal.
3. Department of Production and Systems Engineering, University of Minho, Braga, Portugal.
4. Department of Neonatology, La Paz University Hospital, Madrid, Spain.
5. Alberto Sols Biomedical Research Institute, Universidad Autónoma de Madrid, Madrid, Spain.
6. National Research Council, Madrid, Spain.