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2014
Parental age and the risk of autism spectrum disorders: findings from a Swedish population-based cohort.

CONCLUSIONS:
We confirm prior findings that advancing parental age increases risk of ASD, particularly for ASD with ID(intellectual deficiency),
in a manner dependent on co-parental age.
Although recent attention has emphasized the effects of older fathers on ASD risk, an increase of n years in maternal age has
greater implications for ASD risk than a similar increase in paternal age.