The phrase "are returned back to" is not correct in written English due to redundancy.
You can use it when describing the action of returning something to its original place or state, but it should be simplified.
Example: "The items are returned to the warehouse after the event."
Alternatives: "are returned to" or "are sent back to".
These filtered blocks are returned back to the image.
In contrast, the calculated mass mixing ratios of the tracers in each grid cell within the chemistry module are returned back to the outer module.
In this paper, however, the defective items are stored in the warehouse until the next delivery is received and then are returned back to the supplier via the supplier's vehicle.
If they choose to do so, the bids they used to try to win the item are returned back to their account so they can use them to try to win a different auction.
When cell metabolism is slowed down at reduced temperature in epithelial tumor cells, then nucleolin mRNA induction is reduced markedly but it is resumed rapidly once cells are returned back to 37°C.
The increase in cardiac preload induced by PLR totally reverses once the legs are returned back to the supine position [ 22, 35, 36].
"We are returning back to May," said Mr. Abdel Mahdi.
Less MBA graduates are seeking employment Silicon Valley startups, and are returning back to Wall Street for jobs.
Instead of going solo, getting apartments or committing to first homes, they are returning back to their parents and taking refuge.
However, patient assessed recovery after the first postoperative week has been less frequently studied [ 13], and only few studies have evaluated health-related quality of life during the period, when patients are returning back to work and other daily routines [ 14- 16].
This finding, as previously speculated [ 20], may indicate that LS animals respond faster and more effectively against infection than PS so that by day 2, while the LS are returning back to normal, the PS are still actively fighting the infection.
