1. Resident Nurse in Pediatrics, Pediatric Service, University Hospital of Santiago de Compostela, Rua da Choupana s/n, 15705 Santiago de Compostela, Spain
2. Nurse Specialist in Pediatrics, Hospitalary Unit of Neonatology, University Hospital of Santiago de Compostela, Rua da Choupana s/n, 15705 Santiago de Compostela, Spain
3. Preventive Medicine and Public Health Service, University Hospital of Santiago de Compostela, Rua da Choupana s/n, 15705 Santiago de Compostela, Spain
4. UTAMI, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain