Table 1.
Geographical distributions and study periods of all included studies
| Author (publication year) | Country | City | Period of the study |
|---|---|---|---|
| Lucia Sanchez Ramos (2018) [20] | Germany | Leipzig | NM |
| Mervi Gürsoy (2017) [21] | Finland | Turku | NM |
| Belén Rodríguez-Sánchez (2017) [22] | Spain | Madrid | January 2010 to August 2012. |
| A.C.M. Veloo (2016) [23] | The Netherlands | Groningen | NM |
| Tomoyuki Yunoki (2016) [24] | Japan | Kyoto | June 2013 to May 2014 |
| Sung Jin Jo, M.D. (2015) [25] | Korea | Seoul | January to February 2015 |
| NINA HANDAL (2014) [26] | Norway | Lørenskog | January 2009 to December 2013 |
| Wonmok Lee, M.D. (2014) [27] | Korea | Seoul | 2011 |
| M.J. Barba (2014) [28] | Spain | A Coruña | 2007–2014 |
| Roy Chean (2014) [29] | Australia | Melbourne | 2000–2010 |
| Mariela S. Záratea (2014) [30] | Argentina | Ciudad Autónoma de Buenos Aires | NM |
| Yang Li (2014) [31] | China | Nanjing | NM |
| Yen-Michael S. Hsu (2014) [32] | USA | St. Louis | NM |
| Susanna K P Lau (2013) [33] | China | Hong Kong | NM |
| O. Garner (2013) [34] | USA | St. Louis | January 2012 to August 2012. |
| Melody Barreau(2013) [35] | France | Marseille | 2010–2013 |
| L. Coltella (2013) [7] | Italy | Rome | June 2010 to October 2011 |
| Bryan H. Schmitt (2012) [36] | USA | Minnesota | 2012 |
| N. Wüppenhorst (2012) [37] | Germany | Freiburg | NM |
| Silvia Vega-Casta˜no (2012) [38] | Spain | Salamanca | NM |
| Rémi Fournier (2012) [39] | France | Lille | NM |
| M. Knoester (2012) [40] | The Netherlands | Leiden | January 2010 to February 2011 |
| D. P. Fedorko (2012) [41] | USA | Bethesda | NM |
| Ulrik Stenz Justesen (2011) [14] | Denmark | Vejle | November 2007 to October 2010 |
| Esther Culebras (2011) [42] | Spain | Madrid | 2004–2006 |
| Bernard La Scola (2011) [13] | France | Marseille | 2009–2010 |
| A. C. M. Veloo (2011) [43] | The Netherlands | Leiden | NM |
| A.C.M. Velooa (2011) [44] | The Netherlands | Groningen | NM |
NM Not mentioned in the article