Finding a way to rationalize geographic and rural/urban differentials.
D005843:Geography; D006297:Health Services Accessibility; D007357:Insurance, Physician Services / Q000379:methods*; D006278:Medicare; D010821:Physicians, Family / Q000600:supply & distribution*; D011364:Professional Practice / Q000191:economics*; D011365:Professional Practice Location / Q000191:economics*; D012424:Rural Population; D014481:United States; D014505:Urban Population