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BOSTON -- When an entire community bands together to increase exercise and improve the diets of children in first through third grade, the program can prevent and reverse childhood obesity.

SAN DIEGO -- Pregnant teenage girls in a poor Hispanic neighborhood in Denver were generally happy as clams about having a baby, investigators reported here.

ORLANDO -- Compared with femoral access, percutaneous coronary interventions done by threading a catheter from the arm to the heart, known as transradial access, reduced transfusions and mortality, researchers here reported.

FORT LAUDERDALE, Fla. -- Amblyopia may affect children's self-esteem as well as their visual acuity and fine-motor coordination, according to Australian researchers.

ROTTERDAM, The Netherlands -- Euthanasia and physician-assisted suicide decreased here after these practices were legalized in 2002, researchers reported.

IOWA CITY, Iowa -- Non-cardiac esophageal pain, often mistaken for angina or myocardial infarction, can be eased by theophylline, investigators here confirmed.

FORT LAUDERDALE, Fla. -- Patients with melanoma of the uveal tract of the eye seem to be at an increased risk for colon cancer as well, suggesting a common genetic or molecular basis, reported investigators here.

CHICAGO -- The use of drug-eluting stents was off-label, or for untested purposes, for at least half the Americans who received them in 2004 and 2005, and those patients fared worse than those who met the approved indications.

LEXINGTON, Ky. -- For secondary prevention of cardiovascular disease, a single 81 mg aspirin seems to be the superior approach.

SAN DIEGO -- Those who battled the FDA for non-prescription status of Plan B (levonorgestrel) apparently won only half the struggle. Prescription or nor, Plan B can be hard to get.

SHREVEPORT, La. -- Lipid-lowering statins cut the relative risk of lung cancer 55%, according to a retrospective study.

DALLAS -- New evidence-based guidelines for treatment of intracerebral hemorrhage suggest reserving surgery for bleeds greater than 3 cm in deteriorating patients or when there is brainstem compression.

NEW YORK -- Extensive television viewing, widespread among young children, can carry over into adolescence and translate into learning and attention problems.

LUCERNE, Switzerland -- Percutaneous coronary intervention appears superior to medical therapy for asymptomatic ischemia after a heart attack even though it shows no such benefit for symptomatic post-MI angina, found Swiss researchers.

DURHAM, N.C. -- Children often get past traumatic events without subsequently encountering posttraumatic stress disorder, researchers here reported.

PITTSBURGH -- Teenagers who believe that wealthy, successful people smoke are more likely to become smokers themselves, researchers here reported.

COLUMBUS, Ohio -- Boys with Duchenne muscular dystrophy are able to walk more than three years longer if they take daily corticosteroids, according to researchers here.

SEATTLE -- Few geriatricians appear willing to try newer medications to treat chronic constipation in older adults, an informal survey here showed.