Thomas Ullman

129 papers and 6.1k indexed citations i.

About

Thomas Ullman is a scholar working on Genetics, Epidemiology and Surgery. According to data from OpenAlex, Thomas Ullman has authored 129 papers receiving a total of 6.1k indexed citations (citations by other indexed papers that have themselves been cited), including 93 papers in Genetics, 75 papers in Epidemiology and 29 papers in Surgery. Recurrent topics in Thomas Ullman’s work include Inflammatory Bowel Disease (93 papers), Microscopic Colitis (70 papers) and Colorectal Cancer Screening and Detection (19 papers). Thomas Ullman is often cited by papers focused on Inflammatory Bowel Disease (93 papers), Microscopic Colitis (70 papers) and Colorectal Cancer Screening and Detection (19 papers). Thomas Ullman collaborates with scholars based in United States, Canada and United Kingdom. Thomas Ullman's co-authors include Steven H. Itzkowitz, Noam Harpaz, María T. Abreu, Asher Kornbluth, Carol Bodian, Paul Moayyedi, Nicholas J. Talley, David T. Rubin, Victoria Croog and Sierra Matula and has published in prestigious journals such as Gastroenterology, Gut and International Journal of Cancer.

In The Last Decade

Co-authorship network of co-authors of Thomas Ullman i

Fields of papers citing papers by Thomas Ullman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Thomas Ullman

Since Specialization
Citations

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