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A 'peer-review' journal is a professional research journal that gives all the articles it receives from researchers to a group of experts in the same field to review before publication. Although they do not actually check the researchers' original data, these experts carefully evaluate and check all the articles submitted by researchers. They then decide which ones to publish. The purpose of this quality control process is to ensure that research published by peer-review journals is reliable.

What do we know about a research study if it is published in a peer-reviewed journal? Choose the 3 correct answers.

Experts in the relevant field have carefully checked this research.

Experts have checked the original data and statistical analyses.

The study has been evaluated by experts.

Experts may have told the researchers how to improve their article.