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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2002 1
2003 3
2004 1
2005 1
2006 1
2007 2
2008 5
2009 3
2010 5
2011 4
2012 10
2013 7
2014 11
2015 8
2016 8
2017 12
2018 20
2019 28
2020 27
2021 33
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168 results
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Page 1
Tiotropium in Early-Stage Chronic Obstructive Pulmonary Disease.
Zhou Y, Zhong NS, Li X, Chen S, Zheng J, Zhao D, Yao W, Zhi R, Wei L, He B, Zhang X, Yang C, Li Y, Li F, Du J, Gui J, Hu B, Bai C, Huang P, Chen G, Xu Y, Wang C, Liang B, Li Y, Hu G, Tan H, Ye X, Ma X, Chen Y, Hu X, Tian J, Zhu X, Shi Z, Du X, Li M, Liu S, Yu R, Zhao J, Ma Q, Xie C, Li X, Chen T, Lin Y, Zeng L, Ye C, Ye W, Luo X, Zeng L, Yu S, Guan WJ, Ran P. Zhou Y, et al. Among authors: tian j. N Engl J Med. 2017 Sep 7;377(10):923-935. doi: 10.1056/NEJMoa1700228. N Engl J Med. 2017. PMID: 28877027 Free article. Clinical Trial.
Clinical characteristics of COVID-19 infection in chronic obstructive pulmonary disease: a multicenter, retrospective, observational study.
Wu F, Zhou Y, Wang Z, Xie M, Shi Z, Tang Z, Li X, Li X, Lei C, Li Y, Ni Z, Hu Y, Liu X, Yin W, Cheng L, Ye F, Peng J, Huang L, Tian J, Zhang L, Mo X, Zhang Y, Hu K, Jiang Y, Guan W, Xiang J, Liu Y, Peng Y, Wei L, Hu Y, Peng P, Wang J, Liu J, Huang W, Chen R, Zhao J, Li S, Zhang N, Zhao J, Zhong N, Ran P; Medical Treatment Expert Group for COPD and COVID-19. Wu F, et al. Among authors: tian j. J Thorac Dis. 2020 May;12(5):1811-1823. doi: 10.21037/jtd-20-1914. J Thorac Dis. 2020. PMID: 32642086 Free PMC article.
Experimental Rodent Models of Cardiovascular Diseases.
Jia T, Wang C, Han Z, Wang X, Ding M, Wang Q. Jia T, et al. Front Cardiovasc Med. 2020 Dec 7;7:588075. doi: 10.3389/fcvm.2020.588075. eCollection 2020. Front Cardiovasc Med. 2020. PMID: 33365329 Free PMC article. Review.
168 results