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

Year Number of Results
1980 5
1981 4
1982 4
1983 6
1984 5
1985 10
1986 7
1987 18
1988 15
1989 16
1990 24
1991 21
1992 31
1993 29
1994 18
1995 46
1996 54
1997 62
1998 56
1999 48
2000 55
2001 57
2002 81
2003 96
2004 97
2005 129
2006 131
2007 175
2008 218
2009 238
2010 297
2011 290
2012 323
2013 417
2014 475
2015 515
2016 552
2017 550
2018 724
2019 838
2020 1029
2021 1191
2022 1429
2023 1540
2024 1348
2025 4

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12,025 results

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Page 1
SARS: epidemiology.
Chan-Yeung M, Xu RH. Chan-Yeung M, et al. Among authors: xu rh. Respirology. 2003 Nov;8 Suppl(Suppl 1):S9-14. doi: 10.1046/j.1440-1843.2003.00518.x. Respirology. 2003. PMID: 15018127 Free PMC article. Review.
Molecular therapeutics of HBV.
Xu R, Cai K, Zheng D, Ma H, Xu S, Fan ST. Xu R, et al. Curr Gene Ther. 2003 Aug;3(4):341-55. doi: 10.2174/1566523034578294. Curr Gene Ther. 2003. PMID: 12871021 Review.
Saponins from Mussaenda pubescens.
Zhao W, Xu R, Qin G, Vaisar T, Lee MS. Zhao W, et al. Among authors: xu r. Phytochemistry. 1996 Jul;42(4):1131-4. doi: 10.1016/0031-9422(96)00086-6. Phytochemistry. 1996. PMID: 8688187
Triterpenoid saponins from Clematis chinensis.
Shao B, Qin G, Xu R, Wu H, Ma K. Shao B, et al. Among authors: xu r. Phytochemistry. 1995 Apr;38(6):1473-9. doi: 10.1016/0031-9422(94)00899-5. Phytochemistry. 1995. PMID: 7786477
Diabetes gene therapy: potential and challenges.
Xu R, Li H, Tse LY, Kung HF, Lu H, Lam KS. Xu R, et al. Curr Gene Ther. 2003 Feb;3(1):65-82. doi: 10.2174/1566523033347444. Curr Gene Ther. 2003. PMID: 12553537 Review.
12,025 results
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