Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

My NCBI Filters
Results by year

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

Year Number of Results
2007 1
2009 3
2010 1
2011 2
2013 1
2014 2
2015 1
2016 1
2017 1
2018 1
2019 3
2020 9
2021 7
2022 11
2023 3
Text availability
Article attribute
Article type
Publication date

Search Results

39 results
Results by year
Filters applied: . Clear all
Page 1
Ongoing and future COVID-19 vaccine clinical trials: challenges and opportunities.
Dal-Ré R, Bekker LG, Gluud C, Holm S, Jha V, Poland GA, Rosendaal FR, Schwarzer-Daum B, Sevene E, Tinto H, Voo TC, Sreeharan N. Dal-Ré R, et al. Among authors: voo tc. Lancet Infect Dis. 2021 Nov;21(11):e342-e347. doi: 10.1016/S1473-3099(21)00263-2. Epub 2021 May 18. Lancet Infect Dis. 2021. PMID: 34019801 Free PMC article. Review.
Immunity certification for COVID-19: ethical considerations.
Voo TC, Reis AA, Thomé B, Ho CW, Tam CC, Kelly-Cirino C, Emanuel E, Beca JP, Littler K, Smith MJ, Parker M, Kass N, Gobat N, Lei R, Upshur R, Hurst S, Munsaka S. Voo TC, et al. Bull World Health Organ. 2021 Feb 1;99(2):155-161. doi: 10.2471/BLT.20.280701. Epub 2020 Dec 1. Bull World Health Organ. 2021. PMID: 33551509 Free PMC article.
Organs as inheritable property?
Voo TC, Holm S. Voo TC, et al. J Med Ethics. 2014 Jan;40(1):57-61. doi: 10.1136/medethics-2013-101336. Epub 2013 Aug 30. J Med Ethics. 2014. PMID: 23997023
Adolescent HPV vaccination: empowerment, equity and ethics.
Sundaram N, Voo TC, Tam CC. Sundaram N, et al. Among authors: voo tc. Hum Vaccin Immunother. 2020 Aug 2;16(8):1835-1840. doi: 10.1080/21645515.2019.1697596. Epub 2019 Dec 20. Hum Vaccin Immunother. 2020. PMID: 31860406 Free PMC article.
39 results