Thema
Journal Article
6.998
Research Support, Non-U.S. Gov't
2.496
Research Support, N.I.H., Extramural
2.196
Editorial
1.734
Comment
1.285
Research Support, U.S. Gov't, P.H.S.
753
Letter
659
Historical Article
468
Research Support, U.S. Gov't, Non-P.H.S.
387
Comparative Study
284
Randomized Controlled Trial
238
Review
233
Biography
161
Analgesics, Opioid
117
Systematic Review
103
Classical Article
85
Multicenter Study
83
Evaluation Study
70
Tobacco Smoke Pollution
70
COVID-19 Vaccines
69
Published Erratum
69
Introductory Journal Article
67
Influenza Vaccines
55
2P299V784P
48
Lead
48
News
46
Vaccines
46
Meta-Analysis
42
Portrait
42
Papillomavirus Vaccines
41
Anti-HIV Agents
40
36B82AMQ7N
32
Naloxone
32
Anti-Retroviral Agents
31
Prescription Drugs
31
Research Support, N.I.H., Intramural
31
Narcotic Antagonists
30
6M3C89ZY6R
28
Nicotine
28
Antiviral Agents
25
Biomarkers
25
Drinking Water
25
Dietary Sucrose
23
Flavoring Agents
21
Air Pollutants
20
Particulate Matter
19
40D3SCR4GZ
18
Buprenorphine
18
Hazardous Substances
18
Methadone
18
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