Research on the legal issues of property rights Research on the legal issues of surrogacy regulation Research on the legal protection of patients' rights Research on the legal issues of medical injury Research on the nature of the firm property rights 并列题名:Research on the legal issues of surrogacy regulation 并列题名:Research on the legal protection of patients' rights Research on secured property rights Research on strategy of intellectual property rights 并列题名:Research on the legal issues of medical injury