著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Centers for Disease Control and Prevention,"Hospital-associated measles outbreak—Pennsylvania, March–April 2009",MMWR Morb Mortal Wkly Rep,,,2012,61,,30,https://cir.nii.ac.jp/crid/1371977244265048193,