Table 2.

Productivity and impact of top 20 the most active institutions.

Ranking	Institutes	Country	Records	Average Citation
1	Purdue University	USA	107	26.79
2	Catholic University of Louvain	Belgium	92	34.67
3	Shenyang Pharmaceutical University	China	73	12.96
4	Yeungnam University	South Korea	58	12.98
5	University of Texas Austin	USA	55	32.54
6	University of London	UK	46	17.44
7	Johnson & Johnson	USA	45	37.42
8	Chiba University	Japan	42	12.55
9	University of Copenhagen	Denmark	42	14.83
10	Roche Holding	Swiss	41	18.51
11	Novartis	Swiss	38	23.08
12	Aristotle University of Thessaloniki	Greece	37	30.27
13	Chungnam National University	South Korea	37	23.38
14	Meijo University	Japan	36	18.25
15	University of Greenwich	UK	36	11.06
16	Hanyang University	South Korea	35	8.31
17	AstraZeneca	UK	34	21.12
18	King Saud University	Saudi Arabia	32	5.81
19	Tabriz University MED SCI	Azerbaijan	31	18.94
20	Bristol Myers SQUIBB Co.	USA	30	25.50