Pauliina M. Mäkelä1 | Lotta Immeli1 | Markus Leskinen1 | Olli-Pekka Rinta-Koski2 | Reijo Sund3 | Sture Andersson1 | Päivi Luukkainen1 Actual electrolyte intake during the first week of life and morbidity in very-low-birthweight infants. May 2024 Acta Paediatrica