(1) No harm. The principle of no harm means that the patient's body and mind will not be damaged in the process of diagnosis and treatment, which is the basic principle that medical workers should follow.

2 favorable. Beneficial principle means that the medical staff's diagnosis and treatment behavior aims at protecting patients' interests, promoting patients' health and improving patients' happiness.

Extended information ③ Respect. The principle of respect means that medical staff should respect patients and their rational decisions.

4 justice. Medical justice means that everyone in society has the right to enjoy health resources equally and reasonably or to enjoy fair distribution, and has the right to participate in the distribution and use of health resources. In medical practice, justice not only refers to similarity in form, but also emphasizes justice in content.