"uniquely related" is a correct and usable phrase in written English.
You can use it when you want to describe a relationship that is special and unusual in some way. For example, "The bond between these two sisters is uniquely related, as they have gone through so much together."
Furthermore, sexual abuse was uniquely related with internalizing problems in girls only, whereas only in boys this type of abuse was uniquely related with externalizing problems.
We have identified specific health issues which seem uniquely related to ketamine use.
Strength and cocontraction were uniquely related to different aspects of motor function.
Results indicated that religiosity and paranormal beliefs are uniquely related to OCD features.
A distinctive feature of synchronous motors is that the speed is uniquely related to the supply frequency.
Specifically, worry was uniquely associated with anxious and depressive symptoms whereas rumination was uniquely related to depression.
But it would be a mistake to dismiss the problem as a regional one uniquely related to the slowing demand for coal.
These systems control the nature, direction, and amount of metabolites entering the metabolic pathways and are often uniquely related to the autotrophic nutrition of plants.
Changes in species composition were significantly and uniquely related to agricultural pressures, whilst the variance component characterizing HYMO effects was not significant, confounding separation of unique pressure effects.
Moreover, because we only have data on the 2016 election, it is not clear whether collective narcissism is uniquely related to vote choice in 2016, or whether it consistently predicts presidential voting.
In the blocking case no general prediction can be made: although the non-trivial frequency dispersion often exhibits constant phase angle behaviour, the frequency exponent, α, is not uniquely related to the fractal dimension of the interface.
