Hirofumi Koen

18 papers and 517 indexed citations i.

About

Hirofumi Koen is a scholar working on Hepatology, Epidemiology and Oncology. According to data from OpenAlex, Hirofumi Koen has authored 18 papers receiving a total of 517 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Hepatology, 8 papers in Epidemiology and 5 papers in Oncology. Recurrent topics in Hirofumi Koen’s work include Liver Disease and Transplantation (7 papers), Liver Disease Diagnosis and Treatment (7 papers) and Drug Transport and Resistance Mechanisms (3 papers). Hirofumi Koen is often cited by papers focused on Liver Disease and Transplantation (7 papers), Liver Disease Diagnosis and Treatment (7 papers) and Drug Transport and Resistance Mechanisms (3 papers). Hirofumi Koen collaborates with scholars based in Japan and United States. Hirofumi Koen's co-authors include Kunio Okuda, Kunihiko Ohnishi, Thomas D. Pugh, Stanley Goldfarb, Douglas Nychka, Joshua Chover, Grace Wahba, Motohide Takashi, Fumio Nomura and Takatsune Nakayama and has published in prestigious journals such as Gastroenterology, Hepatology and Radiology.

In The Last Decade

Co-authorship network of co-authors of Hirofumi Koen i

Fields of papers citing papers by Hirofumi Koen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hirofumi Koen

Since Specialization
Citations

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