Koji Oba

325 papers and 6.0k indexed citations i.

About

Koji Oba is a scholar working on Oncology, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, Koji Oba has authored 325 papers receiving a total of 6.0k indexed citations (citations by other indexed papers that have themselves been cited), including 135 papers in Oncology, 102 papers in Pulmonary and Respiratory Medicine and 91 papers in Surgery. Recurrent topics in Koji Oba’s work include Colorectal Cancer Treatments and Studies (71 papers), Gastric Cancer Management and Outcomes (64 papers) and Colorectal Cancer Surgical Treatments (41 papers). Koji Oba is often cited by papers focused on Colorectal Cancer Treatments and Studies (71 papers), Gastric Cancer Management and Outcomes (64 papers) and Colorectal Cancer Surgical Treatments (41 papers). Koji Oba collaborates with scholars based in Japan, United States and Belgium. Koji Oba's co-authors include Hideaki Shimada, Junichi Sakamoto, Marc Buyse, Yasuo Ohashi, Manabu Ohashi, Tamaki Noie, Yutaka Takahashi, Michiya Kobayashi, Xavier Paolettí and Tomasz Burzykowski and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and JAMA.

In The Last Decade

Co-authorship network of co-authors of Koji Oba i

Fields of papers citing papers by Koji Oba

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Koji Oba

Since Specialization
Citations

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