Answer:
Medical researchers had to give the right to decide to the patient about their participation in the research.
Step-by-step explanation:
According to the regulation of medical research, the researchers should follow certain ethics regarding their research. Medical research involves the participation of the people who are considered as subjects of research.
While conducting the research the researcher must follow some ethical rules towards the patients. The most important ethical standard under the article 20, 21 and 22 is to declare the Helsinki, through which the researchers are needed to take grant the right to make decision whether they would like to participate in the research or not.