title: Sleep pattern development from 6 through 33 months.
mesh_terms: D000204:Activity Cycles; D000367:Age Factors; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012737:Sex Factors; D012890:Sleep / Q000502:physiology*; D013997:Time Factors