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

Year Number of Results
1948 1
1968 1
1974 1
1975 1
1976 17
1977 6
1978 13
1979 18
1980 11
1981 18
1982 18
1983 16
1984 36
1985 36
1986 35
1987 52
1988 54
1989 48
1990 52
1991 37
1992 41
1993 34
1994 59
1995 178
1996 440
1997 483
1998 482
1999 473
2000 473
2001 494
2002 491
2003 574
2004 579
2005 650
2006 619
2007 758
2008 868
2009 821
2010 947
2011 1049
2012 1115
2013 1199
2014 1316
2015 1389
2016 1524
2017 1702
2018 1970
2019 2402
2020 2184
2021 1684
2022 1124
2023 950
2024 1665
2025 1100

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28,701 results

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Page 1
Opioids.
Zöllner C, Stein C. Zöllner C, et al. Handb Exp Pharmacol. 2007;(177):31-63. doi: 10.1007/978-3-540-33823-9_2. Handb Exp Pharmacol. 2007. PMID: 17087119 Review.
Opioid analgesics: Managing the predictable.
Barnes A, Heppenstall-Harris G, Dickman A. Barnes A, et al. Clin Med (Lond). 2025 Jul;25(4):100330. doi: 10.1016/j.clinme.2025.100330. Epub 2025 May 27. Clin Med (Lond). 2025. PMID: 40441357 Free PMC article. Review.
28,701 results
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