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调查1130名7～17岁南京农村地区儿童青少年手、腕部骨骼发育情况。骨骼发育速度女性比男性提前两年。应用骨龄可以正确地评价农村儿童青少年生长发育水平，并可作为临床上某些疾病的辅助诊断手段。
A total of 1130 children and adolescents from 7 to 17 years old in Nanjing rural areas were surveyed. Bone development rate of women than men two years earlier. The application of bone age can correctly evaluate the growth and development of children and adolescents in rural areas, and can be used as a clinical diagnosis of certain diseases.