Union
Union is a binary relational algebraic operation that combines two relations with equivalent schemas into a single relation containing all tuples from both relations, excluding duplicates.
5.1K
Publications
224.3K
Citations
8.4K
Authors
2.4K
Institutions
Publications per year
2017–2026
662
Parents
5.1K
Choice Reviews Online · 2002 · 1.8K citations
Humanities, History, Sociology +15
Evidence based medicine: an approach to clinical problem-solving
William Rosenberg · BMJ · 1995 · 1.2K citations
1–5 of 5.1K
8.4K
National Institute of Economic and Social Research, United Kingdom
29 publications · 1.2K citations
19
h-index
18
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18
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18
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16
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1–5 of 8.4K
2.4K

Cornell University
Ithaca, United States
37 h-index
102 publications
6.2K citations
London School of Economics and Political Science
London, United Kingdom
32 h-index
62 publications
4.2K citations

National Bureau of Economic Research
Cambridge, United States
27 h-index
57 publications
3.5K citations
Cardiff University
Cardiff, United Kingdom
25 h-index
56 publications
2.6K citations

University of Warwick
Coventry, United Kingdom
24 h-index
60 publications
2.4K citations

University of Toronto
Toronto, Canada
22 h-index
52 publications
3.2K citations
Chang Gung Memorial Hospital
Taipei, Taiwan
22 h-index
88 publications
3.5K citations
University College London
London, United Kingdom
21 h-index
41 publications
1.7K citations
1–8 of 2.4K
270 publications · 12.2K citations
59
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158 publications · 7.9K citations
50
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69 publications · 4.3K citations
38
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CRO · 94 publications · 6.2K citations
35
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50 publications · 4.1K citations
35
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