Table 2 Characteristics of publications included in this systematic review

Affiliation of corresponding author^a

Private Institution or Foundation

33

52

Public University

12

19

Private University

8

13

Governmental Organization

5

8

None

5

8

Type of journal

Social Sciences & Humanities

16

27

Health Sciences

27

45

Life Sciences

17

28

Type of publication

Original article

32

53

Commentary

14

23

Letter

8

13

Editorial

3

5

Conference proceedings

2

3

Workshop proceedings

1

2