结论山东地青少年的生长发育有明提前的趋势，应慎以往的骨龄评定标准。
Conclusion There is a tendency of ahead of time of growth and development in adolescents in Shandong province, the previous standard of bone age evaluation should be used with caution.
结论山东地青少年的生长发育有明提前的趋势，应慎以往的骨龄评定标准。
Conclusion There is a tendency of ahead of time of growth and development in adolescents in Shandong province, the previous standard of bone age evaluation should be used with caution.
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