H Ullerich

702 total citations
35 papers, 521 citations indexed

About

H Ullerich is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, H Ullerich has authored 35 papers receiving a total of 521 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Surgery, 10 papers in Pulmonary and Respiratory Medicine and 10 papers in Gastroenterology. Recurrent topics in H Ullerich's work include Gastrointestinal disorders and treatments (6 papers), Gastrointestinal Bleeding Diagnosis and Treatment (6 papers) and Esophageal and GI Pathology (6 papers). H Ullerich is often cited by papers focused on Gastrointestinal disorders and treatments (6 papers), Gastrointestinal Bleeding Diagnosis and Treatment (6 papers) and Esophageal and GI Pathology (6 papers). H Ullerich collaborates with scholars based in Germany, Norway and Netherlands. H Ullerich's co-authors include Wolfram Domschke, Dirk Domagk, Tobias Meister, Lars Aabakken, Michael Bretthauer, P Lenz, Torsten Kucharzik, Achim Heinecke, Christian Maaser and Peter Mensink and has published in prestigious journals such as Scientific Reports, European Heart Journal and Journal of Hepatology.

In The Last Decade

H Ullerich

33 papers receiving 504 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
H Ullerich Germany 10 343 251 108 90 87 35 521
Michele Genna Italy 9 199 0.6× 74 0.3× 176 1.6× 42 0.5× 19 0.2× 18 391
Liliane Deeb United States 10 350 1.0× 74 0.3× 242 2.2× 31 0.3× 67 0.8× 65 472
Carlos Augusto Scussel Madalosso Brazil 10 394 1.1× 271 1.1× 37 0.3× 44 0.5× 58 0.7× 27 469
Yasunori Iso Japan 9 313 0.9× 77 0.3× 64 0.6× 49 0.5× 129 1.5× 21 421
Jerry Evans United States 6 303 0.9× 89 0.4× 188 1.7× 19 0.2× 31 0.4× 10 380
Andrea Pisani Ceretti Italy 13 274 0.8× 52 0.2× 160 1.5× 50 0.6× 72 0.8× 27 447
Philip E. Jaffe United States 14 359 1.0× 104 0.4× 268 2.5× 11 0.1× 32 0.4× 24 477
Wilson Siu China 13 534 1.6× 132 0.5× 396 3.7× 21 0.2× 37 0.4× 35 651
Luciano Lenz Brazil 12 183 0.5× 74 0.3× 116 1.1× 13 0.1× 101 1.2× 42 366
Pradyuman B. Dave United States 13 445 1.3× 51 0.2× 128 1.2× 8 0.1× 72 0.8× 27 520

Countries citing papers authored by H Ullerich

Since Specialization
Citations

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

Fields of papers citing papers by H Ullerich

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H Ullerich

This figure shows the co-authorship network connecting the top 25 collaborators of H Ullerich. A scholar is included among the top collaborators of H 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 H Ullerich. H Ullerich is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Vollenberg, Richard, H Ullerich, Martin Schulz, et al.. (2024). Factors Associated with Infectious Complications Following Endoscopic Retrograde Cholangiopancreatography in Liver Transplant Recipients: Insights from a Single-Center Study. Endoscopy. 56(S 02). S61–S62. 1 indexed citations
2.
Ullerich, H, Martin Schulz, Wim Laleman, et al.. (2024). Risk Factors for Infectious Complications following Endoscopic Retrograde Cholangiopancreatography in Liver Transplant Patients: A Single-Center Study. Journal of Clinical Medicine. 13(5). 1438–1438. 1 indexed citations
3.
Scobioala, Sergiu, Khaled Elsayad, Michael Oertel, et al.. (2023). Impact of dose escalation on colostomy-free survival and treatment outcome in squamous cell anal carcinoma. Strahlentherapie und Onkologie. 199(8). 749–760. 5 indexed citations
4.
Cordes, Friederike, Christian Ellermann, Dirk G. Dechering, et al.. (2021). Pre-procedural proton pump inhibition is associated with fewer peri-oesophageal lesions after cryoballoon pulmonary vein isolation. Scientific Reports. 11(1). 4728–4728. 7 indexed citations
5.
Bokemeyer, Arne, Markus Brückner, Dominik Bettenworth, et al.. (2019). Percutaneous‐transhepatic‐endoscopic rendezvous procedures are effective and safe in patients with refractory bile duct obstruction. United European Gastroenterology Journal. 7(3). 397–404. 15 indexed citations
6.
Lenze, Frank, Hauke Heinzow, Edwin Herrmann, et al.. (2013). Clearance of refractory bile duct stones with Extracorporeal Shockwave Lithotripsy: higher failure rate in obese patients. Scandinavian Journal of Gastroenterology. 49(2). 209–214. 4 indexed citations
7.
Domagk, Dirk, Peter Mensink, Hüseyin Aktaş, et al.. (2011). Single- vs. double-balloon enteroscopy in small-bowel diagnostics: a randomized multicenter trial. Endoscopy. 43(6). 472–476. 134 indexed citations
8.
Domagk, Dirk, Peter Mensink, Hüseyin Aktaş, et al.. (2011). Single- vs. double-balloon enteroscopy in small-bowel diagnostics: a randomized multicenter trial. Endoscopy. 43(12). 1089–1089. 3 indexed citations
9.
Maaser, Christian, Klaus Kannengießer, H Ullerich, et al.. (2010). Long-term efficacy and safety of double balloon enteroscopy – prospective and retrospective data from a single center study. Scandinavian Journal of Gastroenterology. 45(7-8). 992–999. 15 indexed citations
10.
Zellerhoff, Stephan, H Ullerich, Frank Lenze, et al.. (2010). Damage to the Esophagus After Atrial Fibrillation Ablation. Circulation Arrhythmia and Electrophysiology. 3(2). 155–159. 77 indexed citations
11.
Lenz, Philipp, Beate Conrad, Torsten Kucharzik, et al.. (2009). Prevalence, associations, and trends of biliary-tract candidiasis: a prospective observational study. Gastrointestinal Endoscopy. 70(3). 480–487. 32 indexed citations
12.
Lenz, P, Johannes Weßling, Dominik Bettenworth, et al.. (2009). Incomplete tubular duplication of the esophagus becoming symptomatic in adulthood. Endoscopy. 41(S 02). E114–E115. 1 indexed citations
13.
Meister, Tobias, Guido Bisping, Matthias Stelljes, et al.. (2008). Intestinal graft-versus-host-disease staging by video capsule endoscopy. Endoscopy. 40(S 02). E144–E144. 4 indexed citations
14.
Meister, Tobias, Hauke Heinzow, Frank Lenze, et al.. (2008). POEMS syndrome associated with multiple hemangiomas of the small bowel and colon. Endoscopy. 40(S 02). E134–E134. 2 indexed citations
15.
Ullerich, H, et al.. (2007). Small intestinal obstruction by a Peutz-Jeghers polyp - double-balloon enteroscopic removal. Endoscopy. 39(S 1). E193–E193. 4 indexed citations
16.
Domagk, Dirk, Michael Bretthauer, P Lenz, et al.. (2007). Carbon dioxide insufflation improves intubation depth in double-balloon enteroscopy: a randomized, controlled, double-blind trial. Endoscopy. 39(12). 1064–1067. 89 indexed citations
17.
Domagk, Dirk, Josef Menzel, Matthias Seidel, et al.. (2006). Endoluminal Gastroplasty (EndoCinchtm) versus Endoscopic Polymer Implantation (Enteryxtm) for Treatment of Gastroesophageal Reflux Disease: 6-Month Results of a Prospective, Randomized Trial. The American Journal of Gastroenterology. 101(3). 422–430. 16 indexed citations
18.
Lebiedz, Pia, H Ullerich, Mildred S. Seelig, Wolfram Domschke, & Torsten Kucharzik. (2005). Jejunal Feeding Tube Causing Intestinal Pneumatosis and Fulminant Portal Venous Gas Embolism. Endoscopy. 37(9). 926–926. 4 indexed citations
19.
Ullerich, H, et al.. (2002). High‐dose interferon α‐2a with ribavirin and amantadine in naïve chronic hepatitis C patients — results of a randomized, prospective, pilot study. Alimentary Pharmacology & Therapeutics. 16(12). 2107–2114. 4 indexed citations
20.
Domagk, Dirk, et al.. (2001). Helicobacter pylori-negative gastric ulcerations associated with celiac disease at first presentation. Zeitschrift für Gastroenterologie. 39(7). 529–532. 2 indexed citations

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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