Crying in infancy.
D002657:Child Development; D002940:Circadian Rhythm; D003448:Crying; D004435:Eating; D005260:Female; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D008297:Male; D010507:Periodicity; D012890:Sleep; D013637:Tape Recording; D013997:Time Factors; D014831:Voice