today to prevent this from happening? This assignment will be 4-5 page, APA formatted, paper

Specify past human research where ethical principles were abandoned. Include some history of the event. Examine lack of autonomy and informed consent for the participants.  What guidelines are in place today to prevent this from happening? This assignment will be 4-5 page, APA formatted, paper and include a minimum of 2-3 references and 2-3 citations from peer-reviewed nursing articles published within the last five years.