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studies have been carried out vs studies have carried out

studies have been carried out vs studies have carried out which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

studies have been carried out is the most popular phrase on the web.

studies have carried out

1424,000 results on the web

studies have been carried out

17,210,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:

  • No acute toxicity studies have been carried out.
  • No specific clinical studies have been carried out with the combined tablet.
  • No studies have been carried out in paediatric patients with hepatic disorder.
  • drug interactions studies have been carried out with alglucosidase alfa.
  • In addition, no comparative studies have been carried out in children.
  • In chemotherapy, three main studies have been carried out.
  • Standard reproductive and developmental toxicity studies have been carried out using parenteral administration of fentanyl.
  • No formal drug
  • No acute toxicity studies have been carried out.
  • No specific clinical studies have been carried out with the combined tablet.
  • In addition, no comparative studies have been carried out in children.
  • No formal drug
  • No studies have been carried out in paediatric patients with hepatic disorder.
  • In five countries in which studies have been carried out
  • Standard reproductive and developmental toxicity studies have been carried out using parenteral administration of fentanyl.
  • drug interactions studies have been carried out with alglucosidase alfa.

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