Anal sphincter electromyography in the first two years of life.
D000200:Action Potentials; D000367:Age Factors; D001003:Anal Canal / Q000502:physiology*; D002675:Child, Preschool; D004576:Electromyography; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology