Durante los primeros años de vida existe una gran variabilidad en el sueño normal, y se producen cambios muy importantes en la duración y distribución del sueño en poco tiempo, motivo por el que es interesante contar con normogramas:
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1.
Iglowstein I, Jenni OG, Molinari L, Largo RH. Sleep Duration From Infancy to Adolescence: Reference Values and Generational Trends. PEDIATRICS [Internet]. 2003 Feb 1 [cited 2018 Aug 4];111(2):302–7. Available from: http://pediatrics.aappublications.org/cgi/doi/10.1542/peds.111.2.302
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