The phrase "although this required" is correct and usable in written English.
It can be used to introduce a contrast or concession regarding a requirement or condition in a sentence.
Example: "Although this required significant effort, the results were worth it."
Alternatives: "even though this necessitated" or "despite this needing".
Seventy genes with differential expression patterns between the phenotypic groups were identified, although this required some relaxation of rigid multiple-testing corrections.
In an experiment with batch microcosms of aquifer material, three of the microcosms ultimately degraded MTBE to below detection, although this required more than 189 days (or >300 days in one case).
Beyond Richmond, the CLR saw further opportunities to continue over L&SWR tracks to the commuter towns of Twickenham, Sunbury and Shepperton, although this required the tracks to be electrified.
Overall, these data confirm some protective role for inhaled CO during pulmonary inflammation, although this required a dose that produced carboxyhemoglobin values close to potentially toxic levels for humans, and increased lung permeability.
Although this required additional investments of time and resources, we found this was essential to designing an intervention appropriate for our study setting.
Although this required increasing the sample size, rapid patient accrual enabled us to detect even small differences in efficacy between treatment groups.
Although this requires the participation of more than just physicians, the collaborative multi-professional requirements for EHRs are often overlooked [ 19].
Although this requires active participation it is a simple idea encouraging people to break and form new habits one small step at a time.
The results show that the closed-form solution is in a very good agreement compared to the results by experiments, although this requires very accurate measurements.
Sources say the next step could be for the council and police to issue antisocial behaviour orders against the men, although this requires local shopkeepers and others to log the disruption they face in diaries.
Genome-wide protein interaction studies in Drosophila embryos, have shown that the Drosophila Tmem33 orthologue, Kr-h2, physically interacts with SERCA59, and although this requires functional validation, the interaction appears to be conserved in humans.
