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Purpose: The population-based National Down Syndrome Project combined epidemiological and molecular methods to study congenital heart defects in Down syndrome. Methods: Between 2000 and 2004, six ...

Skeletal limb abnormalities are problems in the bone structure of your arms or legs. The abnormalities can affect a part of your limb or the entire limb. Usually these problems are present at birth ...

Topological defects are quasiparticles whose topological nature provides some stability against perturbations. Skyrmions, domain walls, dislocations in crystals, vortices in superconductors and ...