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Table 2 The top ten most productive countries with regard to publishing articles related to methaemoglobinaemia

From: Global methaemoglobinaemia research output (1940–2013): a bibliometric analysis

SCRa

Countries

Total number of articles for the whole period (%)

h-index

Median (Q1–Q3) of citation

Average citation

Collaboration with other countriesb

Number (%)c of documents with international collaborationd

1st

USA

438 (24.8)

31

6 (2–12)

11.2

18

26 (5.9)

2nd

UK

79 (4.5)

14

5 (1–11)

11.5

9

11 (13.9)

3rd

India

66 (3.7)

7

1 (0.0–4)

3.3

7

7 (10.6)

3rd

France

66 (3.7)

9

1 (0.0–3.5)

3.8

2

2 (3.0)

5th

Japan

62 (3.5)

11

1 (0.0–8)

5.8

5

6 (9.7)

6th

Germany

53 (3.0)

10

1 (0.0–8.5)

4.6

3

5 (9.4)

7th

Turkey

47 (2.7)

6

1 (0.0–3.0)

2.2

2

4 (8.5)

8th

Canada

31 (1.8)

10

7 (2–15)

10.4

4

5 (16.1)

9th

Israel

24 (1.4)

9

5 (0.3–10.8)

11.3

1

1 (4.2)

10th

Australia

21 (1.2)

5

3 (0.0–5)

5.1

4

2 (9.5)

10th

Spain

21 (1.2)

5

1 (0.0–4)

4.6

2

2 (9.5)

  1. SCR standard competition ranking, Q1–Q3 lower quartile–upper quartile
  2. aEqual countries have the same ranking number, and then a gap is left in the ranking numbers
  3. bThe term “collaboration with other countries” refers to the number of other countries represented among authors were collaborated with authors from a particular country
  4. cPercentage of documents with international authors out of the total number of documents for each country
  5. dThe term “international collaboration” refers to the number of published articles from a particular country and were co-authored by researchers from multiple countries
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