Hiroshi Okamura

220 papers and 3.1k indexed citations i.

About

Hiroshi Okamura is a scholar working on Hematology, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, Hiroshi Okamura has authored 220 papers receiving a total of 3.1k indexed citations (citations by other indexed papers that have themselves been cited), including 47 papers in Hematology, 38 papers in Pulmonary and Respiratory Medicine and 37 papers in Surgery. Recurrent topics in Hiroshi Okamura’s work include Hematopoietic Stem Cell Transplantation (28 papers), Nuclear physics research studies (27 papers) and Voice and Speech Disorders (21 papers). Hiroshi Okamura is often cited by papers focused on Hematopoietic Stem Cell Transplantation (28 papers), Nuclear physics research studies (27 papers) and Voice and Speech Disorders (21 papers). Hiroshi Okamura collaborates with scholars based in Japan, United States and Spain. Hiroshi Okamura's co-authors include Nobuhiko Isshiki, Hiroshi Morita, Michiaki Hiramoto, Takeshi Ishikawa, Eiji Yumoto, Kichiro Hiida, T. Ohta, Yumi Sasaki, Toshiei Kimura and Takanori Okura and has published in prestigious journals such as Circulation, Blood and The Journal of Immunology.

In The Last Decade

Co-authorship network of co-authors of Hiroshi Okamura i

Fields of papers citing papers by Hiroshi Okamura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Hiroshi Okamura

Since Specialization
Citations

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