Table 1 Distribution of studies by country
Country | Number of articles (n = 440) |
|---|---|
The United States of America | 156 (35.45%) |
Canada | 48 (10.91%) |
The United Kingdom | 41 (9.32%) |
Australia | 35 (7.95%) |
Netherland | 14 (3.18%) |
Norway | 13 (2.95%) |
Multiple countriesa | 11 (2.50%) |
Germany | 11 (2.50%) |
Spain | 9 (2.05%) |
China | 8 (1.82%) |
France | 7 (1.59%) |
Ireland | 6 (1.36%) |
Denmark | 6 (1.36%) |
New Zealand | 5 (1.14%) |
Israel | 5 (1.14%) |
Iran | 5 (1.14%) |
Other countriesb: Finland, Sweden, Switzerland, Belgium, Croatia, Hungary, Italy, Portugal, South Africa, Taiwan, Turkey, Austria, Egypt, Malaysia, Saudi Arabia, Singapore, Afghanistan, Brazil, Colombia, India, Lithuania, Moldova, Mongolia, Nigeria, Pakistan, Rep. Macedonia, Sri Lanka, Tanzania, UAE, Uganda | 60 (13.64%) |