Kotaro Mannen

469 total citations
10 papers, 288 citations indexed

About

Kotaro Mannen is a scholar working on Gastroenterology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Kotaro Mannen has authored 10 papers receiving a total of 288 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Gastroenterology, 6 papers in Surgery and 5 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Kotaro Mannen's work include Gastric Cancer Management and Outcomes (5 papers), Gastroesophageal reflux and treatments (3 papers) and Eosinophilic Esophagitis (3 papers). Kotaro Mannen is often cited by papers focused on Gastric Cancer Management and Outcomes (5 papers), Gastroesophageal reflux and treatments (3 papers) and Eosinophilic Esophagitis (3 papers). Kotaro Mannen collaborates with scholars based in Japan. Kotaro Mannen's co-authors include Ryo Shimoda, Ryuichi Iwakiri, Hiroyuki Sakata, Seiji Tsunada, Shinichi Ogata, Yasuhisa Sakata, Takehiro Fujise, Kanako Yamaguchi, Kazuma Fujimoto and Takahiro Noda and has published in prestigious journals such as Gastrointestinal Endoscopy, Journal of Gastroenterology and Hepatology and Journal of Gastroenterology.

In The Last Decade

Kotaro Mannen

10 papers receiving 282 citations

Peers

Kotaro Mannen
Mikinori Kataoka Japan
P. Apostolopoulos Greece
James Robilotti United States
Nicholas Gualtieri United States
Tatsuma Nomura Japan
Kunio Iwatsuka Japan
Roque Estrada United States
Pradip Singh United Kingdom
Hiroji Naka Japan
H.J.A. Hazenberg Netherlands
Mikinori Kataoka Japan
Kotaro Mannen
Citations per year, relative to Kotaro Mannen Kotaro Mannen (= 1×) peers Mikinori Kataoka

Countries citing papers authored by Kotaro Mannen

Since Specialization
Citations

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

Fields of papers citing papers by Kotaro Mannen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kotaro Mannen

This figure shows the co-authorship network connecting the top 25 collaborators of Kotaro Mannen. A scholar is included among the top collaborators of Kotaro Mannen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kotaro Mannen. Kotaro Mannen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

10 of 10 papers shown
1.
Oyama, Tsuneo, Yasumasa Baba, Kohei Yamanouchi, et al.. (2012). Two Years' Intensive Training in Endoscopic Diagnosis Facilitates Detection of Early Gastric Cancer. Internal Medicine. 51(12). 1461–1465. 27 indexed citations
2.
Shimatani, Tomohiko, Mitsushige Sugimoto, Masafumi Nishino, et al.. (2011). Predicting the efficacy of proton pump inhibitors in patients with non‐erosive reflux disease before therapy using dual‐channel 24‐h esophageal pH monitoring. Journal of Gastroenterology and Hepatology. 27(5). 899–906. 8 indexed citations
3.
Tominaga, Naoyuki, Ryuichi Iwakiri, Nanae Tsuruoka, et al.. (2010). [Two cases of esophageal achalasia, in which localized botulinum toxin injections were effective to improve symptoms].. PubMed. 107(4). 598–604. 1 indexed citations
4.
Mannen, Kotaro, Seiji Tsunada, Megumi Hara, et al.. (2009). Risk factors for complications of endoscopic submucosal dissection in gastric tumors: analysis of 478 lesions. Journal of Gastroenterology. 45(1). 30–36. 124 indexed citations
5.
Sakata, Yasuhisa, Shinichi Ogata, Naoyuki Tominaga, et al.. (2009). Evaluation of hemostasis with soft coagulation using endoscopic hemostatic forceps in comparison with metallic hemoclips for bleeding gastric ulcers: a prospective, randomized trial. Journal of Gastroenterology. 45(5). 501–505. 35 indexed citations
6.
Shimoda, Ryo, Ryuichi Iwakiri, Hiroyuki Sakata, et al.. (2008). ENDOSCOPIC HEMOSTASIS WITH METALLIC HEMOCLIPS FOR IATROGENIC MALLORY‐WEISS TEAR CAUSED BY ENDOSCOPIC EXAMINATION. Digestive Endoscopy. 21(1). 20–23. 21 indexed citations
7.
Tsunada, Seiji, Shinichi Ogata, Kotaro Mannen, et al.. (2008). Case series of endoscopic balloon dilation to treat a stricture caused by circumferential resection of the gastric antrum by endoscopic submucosal dissection. Gastrointestinal Endoscopy. 67(6). 979–983. 47 indexed citations
8.
Tsunada, Seiji, Kotaro Mannen, Kanako Yamaguchi, et al.. (2008). A case of advanced colonic cancer that developed from residual laterally spreading tumor treated by piecemeal endoscopic mucosal resection. Clinical Journal of Gastroenterology. 1(1). 18–22. 4 indexed citations
9.
Yoshihara, Κ., Kanako Yamaguchi, T Takashima, et al.. (2007). Dysphagia in Adult Japanese Is Not Equivalent to the Grade of Endoscopic Reflux Esophagitis. Internal Medicine. 46(24). 1951–1956. 3 indexed citations
10.

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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Mikinori Kataoka Breakdown of academic impact, for papers by P. Apostolopoulos Breakdown of academic impact, for papers by James Robilotti Breakdown of academic impact, for papers by Nicholas Gualtieri Breakdown of academic impact, for papers by Tatsuma Nomura Breakdown of academic impact, for papers by Kunio Iwatsuka Breakdown of academic impact, for papers by Roque Estrada Breakdown of academic impact, for papers by Pradip Singh Breakdown of academic impact, for papers by Hiroji Naka Breakdown of academic impact, for papers by H.J.A. Hazenberg
Rankless by CCL
2026