Ken Haruma

618 papers and 15.0k indexed citations i.

About

Ken Haruma is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ken Haruma has authored 618 papers receiving a total of 15.0k indexed citations (citations by other indexed papers that have themselves been cited), including 451 papers in Surgery, 257 papers in Gastroenterology and 202 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ken Haruma’s work include Helicobacter pylori-related gastroenterology studies (308 papers), Gastroesophageal reflux and treatments (164 papers) and Gastric Cancer Management and Outcomes (156 papers). Ken Haruma is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (308 papers), Gastroesophageal reflux and treatments (164 papers) and Gastric Cancer Management and Outcomes (156 papers). Ken Haruma collaborates with scholars based in Japan, United States and Germany. Ken Haruma's co-authors include Masaharu Yoshihara, Shinji Tanaka, Kazuaki Chayama, Goro Kajiyama, Yasuhiko Kitadai, Tomoari Kamada, Jiro Hata, Noriaki Manabe, Masanori Ito and Hiroaki Kusunoki and has published in prestigious journals such as Gastroenterology, PLoS ONE and Cancer.

In The Last Decade

Co-authorship network of co-authors of Ken Haruma i

Fields of papers citing papers by Ken Haruma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Ken Haruma

Since Specialization
Citations

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