Thomas Ullman
Impact in
- Genetics top 0.2%
- Inflammatory Bowel Disease
- Epidemiology top 1%
- Microscopic Colitis
- Autoimmune and Inflammatory Disorders
Papers in
- Genetics 86
- Inflammatory Bowel Disease 86
- Epidemiology 45
- Microscopic Colitis 40
- Co-authors
- Steven H. Itzkowitz (31 shared papers)Noam Harpaz (22 shared papers)María T. Abreu (14 shared papers)Asher Kornbluth (14 shared papers)Carol Bodian (8 shared papers)Paul Moayyedi (5 shared papers)Nicholas J. Talley (4 shared papers)David T. Rubin (9 shared papers)
- Journals
- Gastroenterology (33 papers)Inflammatory Bowel Diseases (26 papers)The American Journal of Gastroenterology (18 papers)Journal of Crohn s and Colitis (10 papers)Clinical Gastroenterology and Hepatology (9 papers)
- Partner nations
- United StatesCanadaUnited Kingdom
In The Last Decade
Thomas Ullman
130 papers receiving 6.5k citations
Thomas Ullman's Hit Papers
Peers
Comparison fields: 5 of 130
- Genetics 3.6k
- Epidemiology 1.7k
- Gastroenterology 270
- Oncology 986
- Hepatology 268
Countries citing papers authored by Thomas Ullman
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).
Fields of papers citing papers by Thomas Ullman
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.
Co-authors
The 25 scholars most cited alongside Thomas Ullman, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 132 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Intestinal Inflammation and Cancer Hit paper breakdown → | 2011 | 901 |
| 2 | Histologic Inflammation Is a Risk Factor for Progression to Colorectal Neoplasia in Ulcerative Colitis: A Cohort Study Hit paper breakdown → | 2007 | 611 |
| 3 | Antibiotic Therapy in Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis Hit paper breakdown → | 2011 | 411 |
| 4 | Placental Transfer of Anti–Tumor Necrosis Factor Agents in Pregnant Patients With Inflammatory Bowel Disease Hit paper breakdown → | 2012 | 365 |
| 5 | 2003 | 271 | |
| 6 | 2011 | 246 | |
| 7 | Appropriate Therapeutic Drug Monitoring of Biologic Agents for Patients With Inflammatory Bowel Diseases Hit paper breakdown → | 2019 | 236 |
| 8 | 2011 | 232 | |
| 9 | 2008 | 225 | |
| 10 | 2011 | 179 | |
| 11 | 2008 | 131 | |
| 12 | 2002 | 115 | |
| 13 | 2006 | 112 | |
| 14 | 2013 | 111 | |
| 15 | 2013 | 109 | |
| 16 | 2008 | 103 | |
| 17 | 2005 | 94 | |
| 18 | 2018 | 85 | |
| 19 | 2010 | 83 | |
| 20 | 2009 | 75 |
About Thomas Ullman
Thomas Ullman is a scholar working on Genetics, Epidemiology, Surgery, Oncology and Hepatology, having authored 132 papers that have together received 6.7k indexed citations. Recurring topics across this work include Inflammatory Bowel Disease (86 papers), Microscopic Colitis (40 papers), Colorectal Cancer Screening and Detection (10 papers), Liver Diseases and Immunity (8 papers), Diverticular Disease and Complications (7 papers), Eosinophilic Esophagitis (5 papers), Gastric Cancer Management and Outcomes (5 papers) and Genetic factors in colorectal cancer (5 papers). The work is most often cited by research in Genetics (3.6k citations), Epidemiology (1.7k citations), Gastroenterology (270 citations), Oncology (986 citations) and Hepatology (268 citations). Thomas Ullman has collaborated with scholars based in United States, Canada and United Kingdom. Frequent 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. Their work appears in journals such as Gastroenterology, Inflammatory Bowel Diseases, The American Journal of Gastroenterology, Journal of Crohn s and Colitis and Clinical Gastroenterology and Hepatology.
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.