Shigemi Nakajima

67 papers and 1.4k indexed citations i.

About

Shigemi Nakajima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, Shigemi Nakajima has authored 67 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Surgery, 26 papers in Pulmonary and Respiratory Medicine and 22 papers in Gastroenterology. Recurrent topics in Shigemi Nakajima’s work include Helicobacter pylori-related gastroenterology studies (36 papers), Gastroesophageal reflux and treatments (17 papers) and Gastric Cancer Management and Outcomes (14 papers). Shigemi Nakajima is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (36 papers), Gastroesophageal reflux and treatments (17 papers) and Gastric Cancer Management and Outcomes (14 papers). Shigemi Nakajima collaborates with scholars based in Japan, United States and Italy. Shigemi Nakajima's co-authors include Takanori Hattori, David Y. Graham, Robert M. Genta, Yuji Tohda, Hiroto Miwa, Tadayuki Oshima, Emad El‐Omar, Peter Malfertheiner, Karel Geboes and Roberto Fiocca and has published in prestigious journals such as Journal of Clinical Oncology, Gastroenterology and Thorax.

In The Last Decade

Co-authorship network of co-authors of Shigemi Nakajima i

Fields of papers citing papers by Shigemi Nakajima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Shigemi Nakajima

Since Specialization
Citations

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