FILE - In this April 16, 2011 file photo, Wakana Nemoto, 3, standing next to her mother Naoko, receives a radiation exposure screening outside an evacuation center in Fukushima,

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FILE - In this April 16, 2011 file photo, Wakana Nemoto, 3, standing next to her mother Naoko, receives a radiation exposure screening outside an evacuation center in Fukushima, northeastern Japan. People exposed to the highest doses of radiation during the Fukushima nuclear plant disaster in 2011 may have a slightly higher risk of cancer that is so small it probably won’t even be detectable, according to a new report from the World Health Organization released on Thursday Feb. 28, 2013. (AP Photo/Hiro Komae, File) less 

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Associated Press
Thu, Feb 28, 2013 8:55 PM EST