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Title
Ethnic differences in the presence of secondary sex characteristics and menarche among US girls: the Third National Health and Nutrition Examination Survey, 1988-1994.
Authors
Wu, Tiejian; Mendola, Pauline; Buck, Germaine M
Abstract
To assess measures of puberty-presence of pubic hair, breast development, and menarche-for 3 racial/ethnic groups of girls in the United States.