Children in chains.
D000367:Age Factors; D002648:Child; D002652:Child Behavior / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005195:Family Relations; D005260:Female; D006693:Holidays; D006801:Humans; D008297:Male; D009765:Obesity / Q000209:etiology / Q000517:prevention & control*