(c) 2009, The Washington Post copyright 2009, The Washington Post WASHINGTON -- Women in their 40s should stop routinely having annual mammograms and older women should cut back to one scheduled exam every other year, an influential federal task force has concluded, challenging the use of one of the most common medical tests. In its first re-evaluation of breast cancer screening since 2002, the independent government-appointed panel recommended the changes, citing evidence that the potential harm to women having annual exams beginning at age 40 outweighs the benefit. Coming amid a highly charged national debate over health-care reform and simmering suspicions about the possibility of rationing medical services, the recommendations immediately became enveloped in controversy. PICKUP 3rdgraf: 'We're not saying women shouldn't xxx. 