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
2002 1
2003 2
2006 1
2007 1
2010 2
2012 1
2013 4
2014 2
2015 4
2016 4
2017 1
2018 2
2019 2
2020 2
2021 5
2022 8
2023 7

Text availability

Article attribute

Article type

Publication date

Search Results

44 results

Results by year

Filters applied: . Clear all
Page 1
Doubly N-Methylated Porphyrinoids.
Naito W, Yasuda N, Morimoto T, Shigeta Y, Takaya H, Hisaki I, Maeda H. Naito W, et al. Org Lett. 2016 Jun 17;18(12):3006-9. doi: 10.1021/acs.orglett.6b01377. Epub 2016 Jun 6. Org Lett. 2016. PMID: 27268126
Living with COVID-19: mass gatherings and minimizing risk.
Murakami M, Yasutaka T, Onishi M, Naito W, Shinohara N, Okuda T, Fujii K, Katayama K, Imoto S. Murakami M, et al. Among authors: naito w. QJM. 2021 Nov 5;114(7):437-439. doi: 10.1093/qjmed/hcab163. QJM. 2021. PMID: 34109393 Free PMC article.
44 results