“…Because of radioactive substances released from FDNPP, people have been worried about the long-term health risk of radiation (Ishigaki et al 2013). As of February 7, 2013, approximately 57,000 inhabitants in Fukushima prefecture have evacuated to other prefectures, and about 100,000 people have moved to other areas within Fukushima prefecture to protect their children from radioactive pollution (Ishigaki et al 2013). One of the most seriously affected areas was the district of Soso, located in the northeast part of Fukushima prefecture, with 12 municipalities (Soma City, Minamisoma City, Shinchi Town, Namie Town, Futaba Town, Ōkuma Town, Tomioka Town, Naraha Town, Hirono Town, Iitate Village, Katsurao Village and Kawauchi Village) (Fig.…”