SPECIAL TOPICS

Chronic Obstructive Pulmonary Disease (COPD)

Published: January 2010

Top 20 Overall:
Authors | Institutions | Journals | Nations

The resulting database contained 113 nations. Ranked by three separate measures: citations, papers, and citations per paper. Source dates: 1999-October 31, 2009 (fifth bimonthly period 2009). Unless otherwise specified, all rankings have a 5 paper threshold for all measures.

Citations
Rank	Author	Citations	Papers	Citations Per Paper
1	USA	86063	5117	16.82
2	England	36868	1840	20.04
3	Canada	21012	1096	19.17
4	Netherlands	15724	938	16.76
5	Italy	14846	1101	13.48
6	Spain	12680	850	14.92
7	Japan	10530	939	11.21
8	Germany	10311	1044	9.88
9	France	9625	861	11.18
10	Belgium	7477	384	19.47
11	Australia	6784	478	14.19
12	Sweden	6260	441	14.20
13	Scotland	5343	237	22.54
14	Denmark	4811	223	21.57
15	Switzerland	4445	324	13.72
16	Peoples R China	2566	342	7.50
17	Norway	2450	164	14.94
18	Finland	2446	142	17.23
19	Poland	2182	110	19.84
20	Greece	2149	227	9.47

  

Papers
Rank	Author	Citations	Papers	Citations Per Paper
1	USA	86063	5117	16.82
2	England	36868	1840	20.04
3	Italy	14846	1101	13.48
4	Canada	21012	1096	19.17
5	Germany	10311	1044	9.88
6	Japan	10530	939	11.21
7	Netherlands	15724	938	16.76
8	France	9625	861	11.18
9	Spain	12680	850	14.92
10	Australia	6784	478	14.19
11	Sweden	6260	441	14.20
12	Belgium	7477	384	19.47
13	Turkey	1766	367	4.81
14	Peoples R China	2566	342	7.50
15	Switzerland	4445	324	13.72
16	Brazil	2106	253	8.32
17	Scotland	5343	237	22.54
18	Greece	2149	227	9.47
19	Denmark	4811	223	21.57
20	Taiwan	791	177	4.47

   

Top 20 Overall:
Authors | Institutions | Journals | Nations