This dilemma illustrates the ethical challenges faced by even the most conscientious physicians, in addition to patient confidentiality, the meaning of informed consent, and the ethics of experimental treatments, transplanting genes or brain tissue. Also, while many agree that every citizen should be given adequate health care, few agree on how to define what adequate health care is. Many of these issues have become almost insoluble moral dilemmas. Babies that would be born with serious birth defects pose a serious moral dilemma, and medical technology makes it sometimes difficult to define what death is in the case of permanently brain damaged patients on respirators. There are also ethical questions on how to allocate scarce resources. However, the Hippocratic Oath is proof that medical technology is not the cause of medical questions about ethics.