"[The authors] identified 25 proposals for national or state single-payer plans ... The proposals typically call for wide-ranging reform; nearly all include changes across the financing, pooling, purchasing, and delivery of health care services.... Common provisions are related to comprehensive benefits, patient choice of providers, little or no cost sharing, the role of private insurance, provider guidelines and standards, periodic reviews of the benefits package, electronic medical records and billing, prescription drug formulary, global budgets, administrative cost thresholds, payment reform and studies, and the authority to implement cost-containment strategies."