Table 2.

Top 10 institutions with the most publications.

Rank	Institution	Country	Number of studies	Total citations	Average citation
1	University of California System	USA	319	21,214	66.50
2	US Department of Veterans Affairs	USA	221	11,335	51.29
3	Veterans Health Administration (VHA)	USA	212	10,719	50.56
4	Harvard University	USA	211	11,851	56.17
5	Karolinska Institutet	Sweden	204	10,400	50.98
6	Institut National de la Sante et de la Recherche Medicale (Inserm)	France	202	10,686	52.90
7	University of London	England	186	11,824	63.57
8	Harvard Medical School	USA	149	7,789	52.28
9	Assistance Publique Hopitaux Paris (APHP)	France	136	7,507	55.20
10	Universite Paris Cite	France	125	6,766	54.13