Stephen T. Amann

5.7k total citations · 1 hit paper
35 papers, 2.1k citations indexed

About

Stephen T. Amann is a scholar working on Surgery, Oncology and Epidemiology. According to data from OpenAlex, Stephen T. Amann has authored 35 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Surgery, 10 papers in Oncology and 5 papers in Epidemiology. Recurrent topics in Stephen T. Amann's work include Pancreatitis Pathology and Treatment (14 papers), Gastrointestinal disorders and treatments (9 papers) and Pancreatic and Hepatic Oncology Research (9 papers). Stephen T. Amann is often cited by papers focused on Pancreatitis Pathology and Treatment (14 papers), Gastrointestinal disorders and treatments (9 papers) and Pancreatic and Hepatic Oncology Research (9 papers). Stephen T. Amann collaborates with scholars based in United States, Italy and United Kingdom. Stephen T. Amann's co-authors include David C. Whitcomb, Phillip P. Toskes, Lawrence K. Gates, Charles D. Ulrich, Robert A. Preston, Garth D. Ehrlich, Stephen P. Martin, Michael Sossenheimer, J. Christopher Post and William Furey and has published in prestigious journals such as Nature Genetics, Gastroenterology and Gut.

In The Last Decade

Stephen T. Amann

33 papers receiving 2.0k citations

Hit Papers

Hereditary pancreatitis is caused by a mutation in the ca... 1996 2026 2006 2016 1996 250 500 750 1000
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Hereditary pancreatitis is caused by a mutation in the cationic trypsinogen gene
    1996 1.1k citations David C. Whitcomb, Michael C. Gorry et al. Nature Genetics profile →

Peers

Stephen T. Amann
Manu Nayar United Kingdom
K. Martin Hoffmann Austria
Carolina Palmela Portugal
Jacques Sarles France
Lindsay Schmidt United States
Anthony Buisson France
Wan C. Tsai United States
Yury Monczak Canada
Min Jae Yang South Korea
Shin Sasaki Japan
Manu Nayar United Kingdom
Stephen T. Amann
Citations per year, relative to Stephen T. Amann Stephen T. Amann (= 1×) peers Manu Nayar

Countries citing papers authored by Stephen T. Amann

Since Specialization
Citations

This map shows the geographic impact of Stephen T. Amann'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 Stephen T. Amann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Stephen T. Amann more than expected).

Fields of papers citing papers by Stephen T. Amann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Stephen T. Amann. 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 Stephen T. Amann. The network helps show where Stephen T. Amann may publish in the future.

Co-authorship network of co-authors of Stephen T. Amann

This figure shows the co-authorship network connecting the top 25 collaborators of Stephen T. Amann. A scholar is included among the top collaborators of Stephen T. Amann 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 Stephen T. Amann. Stephen T. Amann 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.
Amann, Stephen T., et al.. (2024). Resurgent Inflation and Its Impact on Medicare Reimbursements for Outpatient Gastroenterology Procedures. The American Journal of Gastroenterology. 120(5). 1127–1134.
2.
Amann, Stephen T., Eric D. Shah, & Louis Wilson. (2024). An Overview of the Challenging Process of Prior Authorization: Medical Necessity for a Better Way. Clinical Gastroenterology and Hepatology. 22(12). 2362–2366. 1 indexed citations
3.
4.
Shah, Eric D., et al.. (2022). 2021 National Survey on Prior Authorization Burden and Its Impact on Gastroenterology Practice. The American Journal of Gastroenterology. 117(5). 802–805. 19 indexed citations
5.
Wassef, Wahid, John M. DeWitt, Kathleen McGreevy, et al.. (2016). Pancreatitis Quality of Life Instrument: A Psychometric Evaluation. The American Journal of Gastroenterology. 111(8). 1177–1186. 47 indexed citations
6.
Bauersachs, Rupert, et al.. (2013). Initial Anticoagulation Therapy in Patients with Venous Thromboembolism and Impaired Renal Function: Results of an Observational Study. Value in Health. 16(7). A538–A538. 2 indexed citations
7.
Amann, Stephen T., Dhiraj Yadav, M. Michael Barmada, et al.. (2013). Physical and Mental Quality of Life in Chronic Pancreatitis. Pancreas. 42(2). 293–300. 66 indexed citations
8.
Yadav, Dhiraj, Adam Slivka, Stuart Sherman, et al.. (2011). Smoking Is Underrecognized as a Risk Factor for Chronic Pancreatitis. Pancreatology. 10(6). 713–719. 48 indexed citations
9.
Coté, Gregory A., Dhiraj Yadav, Adam Slivka, et al.. (2010). Alcohol and Smoking as Risk Factors in an Epidemiology Study of Patients With Chronic Pancreatitis. Clinical Gastroenterology and Hepatology. 9(3). 266–273. 209 indexed citations
10.
Sprague, Lisa D., Holger C. Scholz, Stephen T. Amann, Hans‐Jürgen Busse, & Heinrich Neubauer. (2008). Yersinia similis sp. nov.. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. 58(4). 952–958. 51 indexed citations
11.
Finch, Rick A., et al.. (2001). Hereditary Pancreatitis in North America: The Pittsburgh-Midwest Multi-Center Pancreatic Study Group Study. Pancreatology. 1(5). 439–443. 51 indexed citations
12.
Amann, Stephen T.. (2001). Expression and penetrance of the hereditary pancreatitis phenotype in monozygotic twins. Gut. 48(4). 542–547. 44 indexed citations
13.
Amann, Stephen T. & Lehel Somogyi. (2000). A wire-loop technique for removal of migrated and embedded biliary stents. Gastrointestinal Endoscopy. 51(4). 485–486. 9 indexed citations
14.
Verne, G. Nicholas, et al.. (1997). Chronic Diarrhea Associated With Thymoma and Hypogammaglobulinemia (Goodʼs Syndrome). Southern Medical Journal. 90(4). 444–446. 26 indexed citations
15.
Amann, Stephen T., et al.. (1997). Acid steatocrit: a simple, rapid gravimetric method to determine steatorrhea.. PubMed. 92(12). 2280–4. 44 indexed citations
16.
Amann, Stephen T., et al.. (1996). Fecal Pancreatic Elastase 1 Is Inaccurate in the Diagnosis of Chronic Pancreatitis. Pancreas. 13(3). 226–230. 63 indexed citations
17.
Amann, Stephen T., et al.. (1996). Stevens-Johnson Syndrome Resulting from Whole-Brain Radiation and Phenytoin. American Journal of Clinical Oncology. 19(1). 32–34. 33 indexed citations
18.
Bauernfeind, A., R. Jungwirth, Stephen T. Amann, et al.. (1996). Characterization of beta-lactamase gene blaPER-2, which encodes an extended-spectrum class A beta-lactamase. Antimicrobial Agents and Chemotherapy. 40(3). 616–620. 118 indexed citations
19.
Whitcomb, David C., Michael C. Gorry, Robert A. Preston, et al.. (1996). Hereditary pancreatitis is caused by a mutation in the cationic trypsinogen gene. Nature Genetics. 14(2). 141–145. 1101 indexed citations breakdown →
20.
Amann, Stephen T., et al.. (1994). Severe Diarrhea and Cushingʼs Syndrome From an Atypical Bronchial Carcinoid. Southern Medical Journal. 87(8). 855–857. 6 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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