Keiko Niimi

75 papers and 1.9k indexed citations i.

About

Keiko Niimi is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Gastroenterology. According to data from OpenAlex, Keiko Niimi has authored 75 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Pulmonary and Respiratory Medicine, 41 papers in Surgery and 31 papers in Gastroenterology. Recurrent topics in Keiko Niimi’s work include Gastric Cancer Management and Outcomes (49 papers), Gastrointestinal Tumor Research and Treatment (23 papers) and Metastasis and carcinoma case studies (19 papers). Keiko Niimi is often cited by papers focused on Gastric Cancer Management and Outcomes (49 papers), Gastrointestinal Tumor Research and Treatment (23 papers) and Metastasis and carcinoma case studies (19 papers). Keiko Niimi collaborates with scholars based in Japan, United States and Italy. Keiko Niimi's co-authors include Mitsuhiro Fujishiro, Nobutake Yamamichi, Shinya Kodashima, Satoshi Ono, Osamu Goto, Kazuhiko Koike, Masao Omata, Chihiro Minatsuki, Yosuke Tsuji and Yoshiki Sakaguchi and has published in prestigious journals such as Blood, PLoS ONE and Journal of Molecular Biology.

In The Last Decade

Co-authorship network of co-authors of Keiko Niimi i

Fields of papers citing papers by Keiko Niimi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Keiko Niimi

Since Specialization
Citations

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