Global leaders support new six-year plan to deliver a polio-free world by 2018
25 April 2013
http://www.who.int/mediacentre/news/releases/2013/polio_six_year_plan_20130425/en/index.html
予防接種の強化。
Global leaders support new six-year plan to deliver a polio-free world by 2018
25 April 2013
http://www.who.int/mediacentre/news/releases/2013/polio_six_year_plan_20130425/en/index.html
予防接種の強化。