Origins of CAT12 pediatric tissue probability map TPM_Age11.5.nii?

Hi everyone,

I am preprocessing my structural MRI data with CAT12/26, which provides a pediatric tissue probability map transformed to MNI152NLin2009cAsym space, namely TPM_Age11.5.nii.

I have to decide between this and other options and was wondering if anyone knows the origin and specifications of this TPM, like the dataset it was derived from, age range?, sex distribution, etc.
I was already searching a lot for this information which is needed to justify the use, but couldnt find it anywhere.

Thanks,
Sarah