Aya Sugiyama

56 papers and 514 indexed citations i.

About

Aya Sugiyama is a scholar working on Epidemiology, Hepatology and Infectious Diseases. According to data from OpenAlex, Aya Sugiyama has authored 56 papers receiving a total of 514 indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Epidemiology, 28 papers in Hepatology and 12 papers in Infectious Diseases. Recurrent topics in Aya Sugiyama’s work include Hepatitis B Virus Studies (20 papers), Hepatitis C virus research (19 papers) and Liver Disease Diagnosis and Treatment (18 papers). Aya Sugiyama is often cited by papers focused on Hepatitis B Virus Studies (20 papers), Hepatitis C virus research (19 papers) and Liver Disease Diagnosis and Treatment (18 papers). Aya Sugiyama collaborates with scholars based in Japan, Cambodia and Burkina Faso. Aya Sugiyama's co-authors include Junko Tanaka, Tomoyuki Akita, Masayuki Ohisa, Serge Ouoba, Ko Ko, Shintaro Nagashima, Nobuhisa Ishikawa, Kazunori Fujitaka, Noboru Hattori and Yoshinori Haruta and has published in prestigious journals such as PLoS ONE, Scientific Reports and Frontiers in Immunology.

In The Last Decade

Co-authorship network of co-authors of Aya Sugiyama i

Fields of papers citing papers by Aya Sugiyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Aya Sugiyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Aya Sugiyama. The network helps show where Aya Sugiyama may publish in the future.

Countries citing papers authored by Aya Sugiyama

Since Specialization
Citations

This map shows the geographic impact of Aya Sugiyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Aya Sugiyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Aya Sugiyama more than expected).

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar’s output or impact.

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2025