This judgment established a new standard of ethical medical behavior for the post World War II human rights era. Amongst other requirements, this document enunciates the requirement of voluntary informed consent of the human subject. The principle of voluntary informed consent protects the right of the individual to control his own body. This code also recognizes that the risk must be weighed against the expected benefit, and that unnecessary pain and suffering must be avoided. This code recognizes that doctors should avoid actions that injure human patients.