Shindo, Hiroki, 		Kikutani, Takeshi, 		Yoshida, Mitsuyoshi, 		Yajima, Yuri, AND 		Tamura, Fumiyo.
" Signs for identifying risk factors for aspiration pneumonia in elderly people needing nursing care" <em>Medical Research Archives</em> [Online], Volume 4 Number 7 (17 November 2016)