Hansjoerg Ullerich
- Surgery top 10%
- Pulmonary and Respiratory Medicine top 10%
- Oncology
- Gastroenterology top 5%
- Genetics
- Co-authors
- Frank LenzeHauke HeinzowArne BokemeyerDominik BettenworthTobias M. NowackiWolfram DomschkeHartmut SchmidtChristian Maaser
- Topics
- Gallbladder and Bile Duct Disorders (10 papers)Cholangiocarcinoma and Gallbladder Cancer Studies (7 papers)Esophageal and GI Pathology (6 papers)
- Partner nations
- GermanyUnited StatesItaly
In The Last Decade
Hansjoerg Ullerich
24 papers receiving 489 citations
Peers
Comparison fields: 5 of 34
- Surgery 368
- Pulmonary and Respiratory Medicine 302
- Oncology 164
- Gastroenterology 89
- Genetics 62
Countries citing papers authored by Hansjoerg Ullerich
This map shows the geographic impact of Hansjoerg Ullerich'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 Hansjoerg Ullerich with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hansjoerg Ullerich more than expected).
Fields of papers citing papers by Hansjoerg Ullerich
This network shows the impact of papers produced by Hansjoerg Ullerich. 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 Hansjoerg Ullerich. The network helps show where Hansjoerg Ullerich may publish in the future.
Co-authorship network of co-authors of Hansjoerg Ullerich
This figure shows the co-authorship network connecting the top 25 collaborators of Hansjoerg Ullerich. A scholar is included among the top collaborators of Hansjoerg Ullerich 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 Hansjoerg Ullerich. Hansjoerg Ullerich is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 2 | |
| 2 | 5 | |
| 3 | 4 | |
| 4 | 8 | |
| 5 | 45 | |
| 6 | 3 | |
| 7 | 19 | |
| 8 | 37 | |
| 9 | 23 | |
| 10 | 12 | |
| 11 | 46 | |
| 12 | 7 | |
| 13 | 1 | |
| 14 | 17 | |
| 15 | 1 | |
| 16 | 79 | |
| 17 | 12 | |
| 18 | 6 | |
| 19 | 2 | |
| 20 | 81 |
About Hansjoerg Ullerich
Hansjoerg Ullerich is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology, having authored 25 papers that have together received 502 indexed citations. Recurring topics across this work include Gallbladder and Bile Duct Disorders (10 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (7 papers) and Esophageal and GI Pathology (6 papers). The work is most often cited by research in Gastroenterology (89 citations), Pulmonary and Respiratory Medicine (302 citations) and Surgery (368 citations). Hansjoerg Ullerich has collaborated with scholars based in Germany, United States and Italy. Frequent co-authors include Frank Lenze, Hauke Heinzow, Arne Bokemeyer, Dominik Bettenworth, Tobias M. Nowacki, Wolfram Domschke, Hartmut Schmidt, Christian Maaser, Torsten Kucharzik and Andreas Luegering. Their work appears in journals such as Gastroenterology, Gut and Scientific Reports.
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.