| http://www.w3.org/ns/prov#value | - At Wal-Mart, CVS and other chain stores, walk-in health clinics are springing up as an antidote to the expense and inconvenience of full-service doctors' offices or the high-cost and impersonal last resort of emergency rooms.For a $30 flu shot, a $45 treatment for an ear infection or other routine services from a posted price list, patients can visit nurse practitioners in independently operated c
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