Under a new program of the Colorado Health Foundation, doctors will get help paying off their medical-school student loans in exchange for agreeing to practice in rural communities. Fifty-seven of Colorado's 64 counties lack enough primary-care physicians to serve local people, state officials say. That's partly because young doctors need the higher salaries and fees available in big cities to pay off student-loans. The new "Physician Loan Repayment Program" is aimed to tackle the problem, officials say.