Table 1 Study Location and Year of Publication
Characteristic | Total (%) (N = 30) |
|---|---|
Year of Publication | |
 1985–1989 | 1 (3.3) |
 1990–1994 | 4 (13.3) |
 1995–1999 | 3 (10.0) |
 2000–2004 | 6 (20.0) |
 2005–2009 | 8 (26.7) |
 2010–2014 | 7 (23.3) |
 2015–2016 | 1 (3.3) |
Study Location | |
 Europe | 19 (63.3) |
 North America | 7 (23.3) |
 Asia | 3 (10.0) |
 Australia | 1 (3.3) |
 South America | 0 (0.0) |
 Africa | 0 (0.0) |