The development of skeletal age haves discrepancy in area while it is difference from race, society, degrees of Latitud and above the sea level.
骨龄发育存在地区性差异，同时亦受民族、社会、纬度、海拔等因素影响。
The development of skeletal age haves discrepancy in area while it is difference from race, society, degrees of Latitud and above the sea level.
骨龄发育存在地区性差异，同时亦受民族、社会、纬度、海拔等因素影响。
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