Except when that is unethical. Service in this case is relief of pain and saving a life, so the only thing the code of ethics in medicine allows to be a factor

Except when that is unethical. Service in this case is relief of pain and saving a life, so the only thing the code of ethics in medicine allows to be a factor in that decision is who needs treatment most urgently. So Joe Biden shot in the arm comes after homeless guy shot in the head.