Emergence of infant sleep-wake patterns in the first three months after birth.
D002657:Child Development; D002940:Circadian Rhythm; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010552:Personality Assessment; D012890:Sleep; D012894:Sleep Stages; D012893:Sleep Wake Disorders / Q000209:etiology; D014851:Wakefulness