Almost a year after the crisis at Tokyo Electric Power Co.'s Fukushima No. 1 nuclear power plant following the March 11, earthquake and tsunami, one serious question remains: to what extent have residents in the vicinity of the plant been exposed to radiation?

As recently as January, it was reported that a new condominium had been constructed with materials containing a high concentration of radioactive cesium, affecting those living there. This was the latest piece of evidence testifying to the degree of radioactive contamination caused by the nuclear crisis.

Although the government has been trying to pacify citizens by claiming there is no immediate threat to human health as a result of exposure to radiation, medical experts are deeply concerned about children and their exposure and the potential hazard to their health.