"Using firm contracts in uncertain situations carries significant commercial risks," says Albert Sanchez-Graells, a professor at the University of Bristol Law School who has been researching NHS contracts for more than 15 years.
To be sure, neither tool is costless. Formulary exclusions can inconvenience some patients, and encouraging patients to use lower-cost pharmacies can mean switching where they fill their prescriptions. But every healthcare system faces a choice: tolerate some limits or accept higher prices across the board. Negotiation requires leverage, and leverage requires the ability to say no—and to reward lower-cost drugs and providers with more business.。PDF资料是该领域的重要参考
Алевтина Запольская (редактор отдела «Бывший СССР»)。PDF资料是该领域的重要参考
With these l_i(x), we can now plot the interpolating polynomial