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

Year Number of Results
2002 2
2003 3
2004 5
2005 2
2006 3
2007 6
2008 13
2009 6
2010 13
2011 12
2012 8
2013 19
2014 14
2015 20
2016 17
2017 26
2018 24
2019 27
2020 25
2021 13
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235 results
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Page 1
Safety and efficacy assessment of allogeneic human dental pulp stem cells to treat patients with severe COVID-19: structured summary of a study protocol for a randomized controlled trial (Phase I / II).
Ye Q, Wang H, Xia X, Zhou C, Liu Z, Xia ZE, Zhang Z, Zhao Y, Yehenala J, Wang S, Zhou G, Hu K, Wu B, Wu CT, Wang S, He Y. Ye Q, et al. Among authors: liu z. Trials. 2020 Jun 12;21(1):520. doi: 10.1186/s13063-020-04380-5. Trials. 2020. PMID: 32532356 Free PMC article. Clinical Trial.
Removal of thallium in water/wastewater: A review.
Xu H, Luo Y, Wang P, Zhu J, Yang Z, Liu Z. Xu H, et al. Among authors: liu z. Water Res. 2019 Nov 15;165:114981. doi: 10.1016/j.watres.2019.114981. Epub 2019 Aug 15. Water Res. 2019. PMID: 31446296 Review.
235 results
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