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Dr. Ethel Siris notes the severity of fractures late in life. “When you break a hip at 80, it can be a life-ending experience.”

Increasingly, research finds that exposure to anesthesia in early childhood may have long-term effects on kids’ brain development.

Encouraging clinical trial results for microarray, a new prenatal test that can detect more genetic problems than ever before.

The machines move a narrowly focused beam of high-intensity radiation very quickly across the body, and David Brenner, director of the Center for Radiological Research at Columbia University Medical Center, says he worries about mechanical malfunctions that could cause the beam to stop in one place for even a few seconds, resulting in greater radiation exposure