A forty-five year investigation for secular changes in physical maturation.
D000293:Adolescent; D000367:Age Factors; D001724:Birth Weight; D001827:Body Height; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006128:Growth; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008572:Menarche; D011627:Puberty; D012621:Seasons; D013223:Statistics as Topic