The original source for the principles of codes of ethics for research on human subjects was developed out of

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The principles of codes of ethics for research on human subjects were developed as a response to the unethical medical experiments conducted during World War II, which were exposed during the Nuremburg Trials of Nazi war criminals in 1946-47. This led to the creation of the Nuremberg Code, a set of ethical guidelines for conducting research on human subjects.

The Original Source for the Principles of Codes of Ethics