J. Theisen

20 papers and 325 indexed citations i.

About

J. Theisen is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, J. Theisen has authored 20 papers receiving a total of 325 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 8 papers in Pulmonary and Respiratory Medicine and 3 papers in Gastroenterology. Recurrent topics in J. Theisen’s work include Gastric Cancer Management and Outcomes (7 papers), Esophageal Cancer Research and Treatment (7 papers) and Esophageal and GI Pathology (5 papers). J. Theisen is often cited by papers focused on Gastric Cancer Management and Outcomes (7 papers), Esophageal Cancer Research and Treatment (7 papers) and Esophageal and GI Pathology (5 papers). J. Theisen collaborates with scholars based in Germany, United States and Austria. J. Theisen's co-authors include H. J. Stein, Marcus Feith, J. R. Siewert, Matthias Schauer, W. T. Knoefel, Matthias Peiper, Christian Möbius, Ingrid Becker, Uta Jütting and P. Gais and has published in prestigious journals such as Gastroenterology, Surgical Endoscopy and Shock.

In The Last Decade

Co-authorship network of co-authors of J. Theisen i

Fields of papers citing papers by J. Theisen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by J. Theisen

Since Specialization
Citations

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