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LOS ANGELES, Nov. 10 (UPI) -- A faulty CT brain scanner exposed 260 patients to eight times the necessary radiation at Cedars-Sinai Medical Center in Los Angeles, officials said.

PHILADELPHIA, Nov. 10 (UPI) -- U.S. researchers link increased use of carotid arterial stenting to poorer outcomes such as heart attack and stroke.

NEW YORK, Nov. 10 (UPI) -- New York researchers suggest a rapidly rising prostate specific antigen may not indicate a greater risk of diagnosis of prostate cancer.

TORONTO, Nov. 10 (UPI) -- Attempted cardiopulmonary resuscitation on the part of bystanders can quadruple cardiac arrest survival rates to more than 50 percent, a Canadian study found.

SAN FRANCISCO, Nov. 9 (UPI) -- Air pollution is a major health risk for patients in Fresno, Calif., who suffer from chronic lung diseases, U.S. researchers said.

NEW YORK, Nov. 9 (UPI) -- Substances produced by the human body may one day help prevent paralysis following a spinal cord injury, U.S. researchers said.

WINSTON-SALEM, N.C., Nov. 9 (UPI) -- Some elevated prostate-specific antigen levels in men may be caused by a hormone normally occurring in the body, U.S. researchers said.

HAIFA, Israel, Nov. 9 (UPI) -- Israeli researchers say synthetic marijuana helped rats under stress recover sooner from emotional trauma.

GOTHENBURG, Sweden, Nov. 9 (UPI) -- Middle-aged women with high levels of the amino acid homocysteine are twice as likely to suffer from Alzheimer's disease later, Swedish researchers found.

CHARLOTTESVILLE, Va., Nov. 9 (UPI) -- The Environmental Health Sciences organization said Monday that U.S. children could be at risk by consuming certain vinegars containing lead.

CHAMPAIGN, Ill., Nov. 9 (UPI) -- U.S. and Hong Kong researchers say controlling parents can cause children to suffer psychologically.

CLYDE, Ohio, Nov. 9 (UPI) -- Several families in Sandusky County, Ohio, said they want government officials to take action regarding a suspected cancer cluster in their area.

ATHENS, Greece, Nov. 9 (UPI) -- Greek researchers say mom was right when she said "wolfing down your food will make you fat."

LEIPZIG, Germany, Nov. 9 (UPI) -- French infants cry in a different way than German babies in their first days of life, researchers in Germany and France found.

BLOOMINGTON, Ind., Nov. 9 (UPI) -- The use of lubricants during sex alone or with a partner contributed to higher ratings of pleasurable and satisfying sex in women, U.S. researchers found.

TAIPEI, Taiwan, Nov. 9 (UPI) -- People identified as "heavy users" of flowers rated "emotion conditioning" as more important than "showing care to others," researchers in Taiwan found.

BOSTON, Nov. 9 (UPI) -- Many education officials base decisions on when to close schools for flu on politics or fear rather than data, U.S. and Japanese researchers say.

BOSTON, Nov. 9 (UPI) -- A majority of U.S. adults who tried to get the H1N1 vaccine for themselves or their children have been unable to do so, a poll indicates.

SACRAMENTO, Nov. 8 (UPI) -- The growing number of medical marijuana clinics opening in California has ratcheted up the debate about both their legitimacy and worthiness, observers say.

GERMANTOWN, Wis., Nov. 8 (UPI) -- State officials said nearly 4,000 gallons of bleach will be used to kill an invasive crayfish species living in ponds in Germantown, Wis.