A prospective study of sexual development and growth in American girls: the statistics of menarchie.
D000293:Adolescent; D002648:Child; D005260:Female; D006128:Growth; D006801:Humans; D007231:Infant, Newborn; D008404:Massachusetts; D008572:Menarche; D011446:Prospective Studies; D013223:Statistics as Topic; D014481:United States