*USA, Europe and Germany are very active in ureteral stent research.
[[Image:Geodistribution5.png|thumb|center|600px|Geographical Activity]]
*References
1- [http://en.wikipedia.org/wiki/Demographics_of_the_United_States http://en.wikipedia.org/wiki/Demographics_of_the_United_States]
2- [http://www.wrongdiagnosis.com/c/catheter_infection/stats.htm?ktrack=kcplink http://www.wrongdiagnosis.com/c/catheter_infection/stats.htm?ktrack=kcplink]
3- [http://www.fda.gov/downloads/ScienceResearch/SpecialTopics/WomensHealthResearch/UCM247851.pdf http://www.fda.gov/downloads/ScienceResearch/SpecialTopics/WomensHealthResearch/UCM247851.pdf]
4- [http://www.managementparadise.com/forums/principles-management-p-o-m/208329-swot-analysis-boston-scientific-corporation.html http://www.managementparadise.com/forums/principles-management-p-o-m/208329-swot-analysis-boston-scientific-corporation.html]
==Trends in stent R&D==