From: Collaborative research: Accomplishments & potential
Type of paper
Epidemiology
N papers (%)
N citations
Eur Respir J
National
17 (71)
53
10 (53)
18
(US)
9 (38)
68
1 (5)
6
(other)
8 (33)
37
9 (48)
International
7 (29)
54
23
Inter-European
1 (4)
16
6 (32)
25