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

Year Number of Results
1999 1
2002 1
2003 2
2004 1
2005 3
2006 2
2007 2
2008 6
2009 6
2010 2
2011 7
2012 5
2013 7
2014 2
2015 4
2016 8
2017 3
2018 6
2019 10
2020 16
2021 4
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93 results
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Page 1
Placebo effects and the common cold: a randomized controlled trial.
Barrett B, Brown R, Rakel D, Rabago D, Marchand L, Scheder J, Mundt M, Thomas G, Barlow S. Barrett B, et al. Among authors: rabago d. Ann Fam Med. 2011 Jul-Aug;9(4):312-22. doi: 10.1370/afm.1250. Ann Fam Med. 2011. PMID: 21747102 Free PMC article. Clinical Trial.
93 results
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