"Trace amounts of radioactive substances were found in urine samples of all of 10 surveyed children from Fukushima Prefecture in May, where a crippled nuclear power plant is located, a local citizens group and a French nongovernmental organization said Thursday." The Manichi Daily News
Such contamination suggests the children have been contaminated with radioactive substances internally, something Beyond Nuclear and other groups have been concerned about since releases from the accident were first reported.