全民健保 組織體制 二代健保 公辦公營 行政法人 權責相符 政府治理 社會參與 社會自治 團體協商 National health insurance NHI Organizational institution The second generation NHI State management Executive non-departmental public body corporation Executive non-departmental public public corporation Accountability Governmental governance Social participation Social self-governance Collective negotiation