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2. The journal gives some methods the researchers follow.
3. The system is controlled in experiments the investigators make.
4. I do not think the work was very difficult.
5. The research this work is relevant to includes some diseases.
6. The patients knew of the medicine they were given.
7. He examined patients in the room he works in.
8. It was decided to carry out the research in the field Dr S. was one of the
pioneers.
9. I see you are busy.
10.Dr N. got for the laboratory he organized some new equipment.
11. In no patients the surgeons had operated on the complications developed.
12.The effects they have tested were beneficial.
13.I know you are right.
14.I feel the experiment will not confirm the hypothesis.
15.The association we studied was also clear from the data.