Héroes de la vida - Life's heroes - #21 Masao Yoshida

http://www.ibtimes.com/fukushima-hero-masao-yoshida-dies-esophageal-cancer-experts-say-illness-was-unrelated-radiation

http://en.wikipedia.org/wiki/Masao_Yoshida_(nuclear_engineer)

http://japandailypress.com/tag/masao-yoshida/

http://www.elmundo.es/elmundo/2013/07/09/internacional/1373368567.html