Eiji Hamajima

20 papers and 295 indexed citations i.

About

Eiji Hamajima is a scholar working on Surgery, Gastroenterology and Epidemiology. According to data from OpenAlex, Eiji Hamajima has authored 20 papers receiving a total of 295 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Surgery, 5 papers in Gastroenterology and 4 papers in Epidemiology. Recurrent topics in Eiji Hamajima’s work include Helicobacter pylori-related gastroenterology studies (7 papers), Neuroendocrine Tumor Research Advances (3 papers) and Neuroblastoma Research and Treatments (3 papers). Eiji Hamajima is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (7 papers), Neuroendocrine Tumor Research Advances (3 papers) and Neuroblastoma Research and Treatments (3 papers). Eiji Hamajima collaborates with scholars based in Japan. Eiji Hamajima's co-authors include Hidemi Goto, Yoshihisa Tsukamoto, Yasumasa Niwa, H. Yoshikane, Naoki Ohmiya, Takashi Suzuki, Tomiyasu Arisawa, Kose Segawa, Hiroshi Hoshino and Satoru Sugiyama and has published in prestigious journals such as Biochemical and Biophysical Research Communications, Gastrointestinal Endoscopy and Digestive Diseases and Sciences.

In The Last Decade

Co-authorship network of co-authors of Eiji Hamajima i

Fields of papers citing papers by Eiji Hamajima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Eiji Hamajima

Since Specialization
Citations

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