The phrase "a parallel study of" is correct and usable in written English.
It can be used when discussing research or analysis that compares or examines two or more subjects side by side.
Example: "The researchers conducted a parallel study of the effects of climate change on both marine and terrestrial ecosystems."
Alternatives: "a comparative analysis of" or "a side-by-side examination of".
So in Afghanistan, Cebrowski has launched a parallel study of the war, using outside experts.
Currently, his research centers on a parallel study of antisemitism and Islamophobia from the mid-nineteenth century onwards.
A parallel study of 4,000 patients in Ghana is under way, and its results so far are "very reassuring," Dr. Blumenthal said.
The company, Agbar Technologies, has also agreed to hire an outside auditor to examine its testing equipment and will pay for a second, state-supervised consultant to conduct a parallel study of the company's testing process.
Our mtDNA data, in comparison with those of a parallel study of the Xq13.3 reginn7 in the same individuals, provide a concurrent view on human evolution with respect to the age of modern humans.
The present paper updates the original data for baseball and basketball to 2012 and adds a parallel study of ice hockey.
We conducted a parallel study, on a subset of the genes in Ethiopian highlanders.
This miRNA study has been performed as a parallel study to a study of mRNA expression analysis[ 20] designed to identify mRNA predictors of chemoresistance.
A parallel study for west of the Rockies is under way; the third North American grid covers most of Texas, which is already heavily dependent on wind.
Issues within Ghana that focus on telephone-based access to emergency medical services through emergency medical dispatch are the subject of a parallel study by the investigators of this study.
The results complement the results of a parallel study investigating the effects of serotonin depletion on a similar behavioral inhibition procedure in rats.
