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SALT LAKE CITY -- For patients with emphysema who might be candidates for lung volume reduction surgery, an umbrella-shaped valve could be a safe, effective, and non-invasive alternative, according to researchers here.

KEELE, England -- Two non-traditional interventional approaches produced short-term improvements in knee pain in older patients, according to researchers here, but the effects did not last.

PHILADELPHIA -- For most women with early breast cancer, following five years of tamoxifen with an aromatase inhibitor will bring only a slight improvement in disease-free survival, according to researchers here.

MENLO PARK, Calif. -- The answer to intractable refractory tennis elbow may be a single injection of endogenous plasma, treated to increase the concentration of platelets, according to researchers here.

UTRECHT, The Netherlands -- Reserve antibiotics for children younger than two years old with bilateral acute otitis media infections or for any child with otorrhea, researchers here recommended. For other children, watchful waiting seems justified

NEW ORLEANS -- Bicycle crashes are more likely to be fatal when the rider has been drinking, is an adult male, has a collision with a car, or is riding on a high-speed roadway, reported researchers here.

NEW ORLEANS -- A brightly colored, attractively packaged household cleaning product called Fabuloso has led to a rash of emergency department visits for accidental ingestion, toxicology researchers reported here.

LONDON -- There's more evidence that vitamin D is protective against breast cancer progression, but the relationship remains less than definitive, researchers here said.

BOSTON -- Compared with the cardiovascular benefits of finfish and shellfish, fears of mercury and polychlorinated biphenyls (PCBs) should be considered dead in the water, according to a review of the evidence.

YOKOHAMA, Japan -- The antioxidant enzyme heme oxygenase-1 may be a potential biomarker or even treatment for silicosis, according to researchers here.