智力迟钝的病因。

N Z Med J. 1977 Feb 9;85(581):103-5.

The aetiological factors related to mental retardation are tabulated and discussed. The data comprise part of the findings of a large scale sociological survey of mental retardation and show that approximately 65% of subjects classified as "mentally retarded" have a specific diagnosis.

与智力迟钝相关的病因因素被制成表格并进行了讨论。这些数据是一项关于智力迟钝的大规模社会学调查结果的一部分，表明约65%被归类为“智力迟钝”的研究对象有特定诊断。