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

Year Number of Results
1944 1
1945 10
1946 51
1947 50
1948 67
1949 48
1950 81
1951 56
1952 61
1953 51
1954 53
1955 61
1956 52
1957 81
1958 73
1959 53
1960 83
1961 73
1962 91
1963 72
1964 76
1965 33
1966 8
1967 23
1968 8
1969 8
1970 26
1971 12
1972 31
1973 40
1974 43
1975 35
1976 28
1977 29
1978 29
1979 51
1980 120
1981 265
1982 309
1983 431
1984 521
1985 448
1986 541
1987 494
1988 588
1989 679
1990 680
1991 808
1992 778
1993 797
1994 894
1995 1100
1996 1305
1997 1575
1998 1887
1999 2748
2000 3206
2001 3743
2002 4114
2003 4710
2004 5396
2005 6362
2006 7025
2007 8019
2008 9103
2009 9653
2010 10174
2011 10337
2012 11023
2013 11244
2014 11443
2015 11567
2016 11016
2017 10680
2018 10326
2019 11417
2020 11388
2021 10709
2022 4853
2023 3563
2024 2930

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197,823 results

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Page 1
Circadian regulation of depression: A role for serotonin.
Daut RA, Fonken LK. Daut RA, et al. Front Neuroendocrinol. 2019 Jul;54:100746. doi: 10.1016/j.yfrne.2019.04.003. Epub 2019 Apr 16. Front Neuroendocrinol. 2019. PMID: 31002895 Free PMC article. Review.
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