Gonçalves C., Abreu S., Padrão P., Pinho O., Graça P., Breda J., Santos R. and Moreira P. (2016) “Sodium and potassium urinary excretion and dietary intake: a cross-sectional analysis in adolescents”, Food & Nutrition Research, 600. doi: 10.3402/fnr.v60.29442.