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When doing medical research with human subjects, which four limitations are unavoidable?

1- It’s often impossible to repeat trials on the same subjects.

2-Subjects may report an inaccurate medical history.

3-It can be difficult to control all possible variables.

4-It’s impossible to come up with testable scientific questions for human subjects.

5-There are ethical or privacy concerns to consider.

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Answer

The limitations are;

• Privacy of the individuals involved in the research process.

• Physical and psychological risks should be minimized

• The subjects should be chosen equitably

• Only reasonable exposure to risks is admissible.

Explanation

The privacy of the individuals involved in the research must be taken into consideration. This will ensure safety of patient data and information. The risk of physical and physiological well being of the person must be taken into consideration in such a research. In addition to that, the subject must be made to understand every procedure and the risks involved before testing. Moreover, only minimal exposure to risks is allowed and must have been previously tested in animals to avoid deaths.