title: The need and challenge of adolescent health.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D003710:Demography; D004467:Economics; D006262:Health; D006301:Health Services Needs and Demand; D011153:Population; D011154:Population Characteristics
keywords: Adolescents; Age Factors; Demographic Factors; Economic Factors; Health; Needs; Population; Population Characteristics; Youth