Authors | Year | Study design | Retrospective/prospective | Geographic location |
---|---|---|---|---|
Bechtel et al. [39] | 2005 | Interventional, non-randomized controlled trial | Prospective | Germany |
Bechtel et al. [40] | 2008 | Interventional, non-randomized controlled trial | Prospective | Germany |
Bibevski et al. [41] | 2017 | Observational cohort study | Retrospective | United States of America |
Boethig et al. [42] | 2019 | Observational cohort study | Prospective | Germany |
Brown et al. [43] | 2010 | Observational cohort study | Retrospective | United States of America |
Brown et al. [44] | 2011 | Observational cohort study | Retrospective | United States of America |
Burch et al. [45] | 2010 | Observational cohort study | Retrospective | United States of America |
Cebotari et al. [46] | 2011 | Interventional, non-randomized controlled trial | Prospective | Germany |
da Costa et al. [47] | 2005 | Interventional, non-randomized controlled trial | Prospective | Brazil |
da Costa et al. [33] | 2007 | Interventional, non-randomized controlled trial | Prospective | Brazil |
da Costa et al. [48] | 2018 | Interventional, non-randomized controlled trial | Prospective | Brazil |
Etnel et al. [49] | 2018 | Interventional, non-randomized controlled trial | Prospective | Netherlands |
Konuma et al. [50] | 2009 | Observational cohort study | Retrospective | United States of America |
Ruzmetov et al. [51] | 2012 | Observational cohort study | Retrospective | United States of America |
Sarikouch et al. [34] | 2016 | Interventional, non-randomized controlled trial | Prospective | Germany |
Sievers et al. [52] | 2003 | Interventional, non-randomized controlled trial | Prospective | Germany |
Tavakkol et al. [53] | 2005 | Observational cohort study | Retrospective | United States of America |