Policy experts say people are rightly concerned about the nation's healthcare costs, but they should not worry that health reform will lead to a system of medical rationing anytime soon. Those fears, the experts say, seem to stem from talk of a government-run health plan or proposals for government-sponsored research to determine which medical treatments are most effective. But few health policy experts see the likelihood of lawmakers' adopting a new system in which government bureaucrats decide whether someone's grandfather can get his hip replaced.