A comparative analysis of bone age and stature development between 93 cases of mental retardation and 305 cases of mentally ormal children was made.

• 本文对93例智力低下儿童与305例智力正常儿童的体格发育及骨龄进行了对照分析,结果发现,约有半数智力低下儿童体格发育低下。