Type: Article
Published: In Science (American Association for the Advancement of Science) volume 321 issue 5887 (2008)
Type: Article
Published: In Journal of allied health volume 51 issue 1 (2022)
Type: Article
Published: In Science (American Association for the Advancement of Science) volume 295 issue 5564 (2002)
Type: Article
Published: In Journal of the Medical Library Association volume 91 issue 1 (2003)
Type: Journal
Published: In Monthly Review of the U.S. Bureau of Labor Statistics (1915)