Hiroyuki Hagiyama

20 papers and 363 indexed citations i.

About

Hiroyuki Hagiyama is a scholar working on Rheumatology, Epidemiology and Immunology. According to data from OpenAlex, Hiroyuki Hagiyama has authored 20 papers receiving a total of 363 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Rheumatology, 7 papers in Epidemiology and 5 papers in Immunology. Recurrent topics in Hiroyuki Hagiyama’s work include Hepatitis C virus research (5 papers), Autoimmune and Inflammatory Disorders Research (4 papers) and Hepatitis B Virus Studies (4 papers). Hiroyuki Hagiyama is often cited by papers focused on Hepatitis C virus research (5 papers), Autoimmune and Inflammatory Disorders Research (4 papers) and Hepatitis B Virus Studies (4 papers). Hiroyuki Hagiyama collaborates with scholars based in Japan, Greece and United States. Hiroyuki Hagiyama's co-authors include Nobuyuki Miyasaka, Yukiko Komano, Hitoshi Kohsaka, Tsutomu Yoshida, Takeshi Tsubata, Toshihiro Nanki, M. Watanabe, Sae Ochi, Yoshinori Nonomura and Kiyoshi Nishioka and has published in prestigious journals such as Oncogene, Annals of the Rheumatic Diseases and Arthritis Research & Therapy.

In The Last Decade

Co-authorship network of co-authors of Hiroyuki Hagiyama i

Fields of papers citing papers by Hiroyuki Hagiyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroyuki Hagiyama. 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 Hiroyuki Hagiyama. The network helps show where Hiroyuki Hagiyama may publish in the future.

Countries citing papers authored by Hiroyuki Hagiyama

Since Specialization
Citations

This map shows the geographic impact of Hiroyuki Hagiyama'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 Hiroyuki Hagiyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroyuki Hagiyama 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