J. Theisen

446 total citations
21 papers, 334 citations indexed

About

J. Theisen is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, J. Theisen has authored 21 papers receiving a total of 334 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Surgery, 8 papers in Pulmonary and Respiratory Medicine and 3 papers in Gastroenterology. Recurrent topics in J. Theisen's work include Esophageal Cancer Research and Treatment (7 papers), Gastric Cancer Management and Outcomes (7 papers) and Esophageal and GI Pathology (5 papers). J. Theisen is often cited by papers focused on Esophageal Cancer Research and Treatment (7 papers), Gastric Cancer Management and Outcomes (7 papers) and Esophageal and GI Pathology (5 papers). J. Theisen collaborates with scholars based in Germany, United States and Austria. J. Theisen's co-authors include H. J. Stein, Marcus Feith, J. R. Siewert, Matthias Schauer, Matthias Peiper, W. T. Knoefel, P. Gais, Uta Jütting, Christian Möbius and Ingrid Becker and has published in prestigious journals such as Gastroenterology, Surgical Endoscopy and Shock.

In The Last Decade

J. Theisen

19 papers receiving 327 citations

Peers

J. Theisen

SURGE

PRM

GASTR

ONCOL

Kenkei Hasatani Japan

Being‐Whey Wang Taiwan

Shubao Wang China

Zhao Shen Li China

Dongmei Lin China

Richard R. Gurski Brazil

Taghreed Almahmeed United States

P. Pienkowski France

Rodney J. Pacifico United States

Kenkei Hasatani Japan

J. Theisen

78 ×0.3

SURGE

92 ×0.5

PRM

65 ×0.9

GASTR

25 ×0.5

79 ×1.5

ONCOL

Citations per year, relative to J. Theisen J. Theisen (= 1×) peers Kenkei Hasatani

Countries citing papers authored by J. Theisen

Since Specialization

Citations

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

Fields of papers citing papers by J. Theisen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Theisen

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

All Works

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20 of 20 papers shown

Theisen, J., Zoe Weinstein, Melissa Davoust, et al.. (2025). Patient and Provider Perspectives on the Elimination of Urine Drug Testing in Office-Based Addiction Treatment. PubMed. 47(1). 144–152.

Davoust, Melissa, Angela R. Bazzi, J. Theisen, et al.. (2025). Patient and clinician experiences with the implementation of telemedicine and related adaptations in office-based buprenorphine treatment during the COVID-19 pandemic: a qualitative study. Addiction Science & Clinical Practice. 20(1). 21–21. 2 indexed citations

Weinstein, Zoe, Sara Lodi, Alicia S. Ventura, et al.. (2024). The Impact of COVID-19 on Substance Use and Related Consequences Among Patients in Office-based Opioid Use Disorder Treatment. Journal of Addiction Medicine. 19(1). 12–19.

Fakhrian, Khashayar, Bernhard Haller, J. Theisen, et al.. (2014). Cisplatin- vs. oxaliplatin-based radiosensitizing chemotherapy for squamous cell carcinoma of the esophagus. Strahlentherapie und Onkologie. 190(11). 987–992. 9 indexed citations

Schauer, Matthias, Matthias Peiper, J. Theisen, & W. T. Knoefel. (2011). Prognostic factors in patients with diffuse type gastric cancer (linitis plastica) after operative treatment. European journal of medical research. 16(1). 29–29. 51 indexed citations

Theisen, J., Kathleen D. Danenberg, Katja Ott, et al.. (2008). Predictors of response and survival for neoadjuvant treated patients with esophageal adenocarcinoma. Diseases of the Esophagus. 21(7). 601–606. 16 indexed citations

Rahden, Burkhard H.A. von, et al.. (2007). Expression of prostaglandin E synthase in Barrett’s cancer. Diseases of the Esophagus. 21(4). 304–308. 12 indexed citations

Theisen, J., Marcus Feith, H. J. Stein, & J. R. Siewert. (2007). Management of Early Esophageal Cancer. Advances in Surgery. 41. 229–239. 4 indexed citations

Theisen, J., H. J. Stein, Marcus Feith, et al.. (2005). Preferred location for the development of esophageal adenocarcinoma within a segment of intestinal metaplasia. Surgical Endoscopy. 20(2). 235–238. 15 indexed citations

10.

Möbius, Christian, H. J. Stein, C. Katharina Spieß, et al.. (2005). COX2 expression, angiogenesis, proliferation and survival in Barrett's cancer. European Journal of Surgical Oncology. 31(7). 755–759. 50 indexed citations

11.

Theisen, J., John J. Nigro, Tom R. DeMeester, et al.. (2004). Chronology of the Barrett’s metaplasia–dysplasia–carcinoma sequence*. Diseases of the Esophagus. 17(1). 67–70. 28 indexed citations

12.

Möbius, Christian, H. J. Stein, Ingrid Becker, et al.. (2003). The ‘angiogenic switch’ in the progression from Barrett's metaplasia to esophageal adenocarcinoma. European Journal of Surgical Oncology. 29(10). 890–894. 46 indexed citations

13.

Theisen, J., et al.. (2003). Pneumatosis cystoides intestinalis coli. Surgical Endoscopy. 17(1). 157–158. 13 indexed citations

14.

Theisen, J., H. J. Stein, H. J. Dittler, et al.. (2002). Preoperative chemotherapy unmasks underlying Barrett’s mucosa in patients with adenocarcinoma of the distal esophagus. Surgical Endoscopy. 16(4). 671–673. 48 indexed citations

15.

Theisen, J., Stefan Öberg, Jeffrey H. Peters, et al.. (2001). Gastro-esophageal reflux disease confined to the sphincter*. Diseases of the Esophagus. 14(3-4). 235–238. 10 indexed citations

16.

Campos, Guilherme M., Jeff Peters, Thomas Demeester, et al.. (1998). Multivariate analysis of the factors predicting outcome after laparoscopic Nissen fundoplication. Gastroenterology. 114. A1381–A1381. 5 indexed citations

17.

Campos, Guilherme M., Stefan Öberg, Otávio Leite Gastal, et al.. (1998). A new standardized method for measurement of the lower esophageal sphincter. Gastroenterology. 114. A730–A730. 1 indexed citations

18.

Popp, Walter, K. Norpoth, C. Vahrenholz, et al.. (1997). Polychlorinated naphthalene exposures and liver function changes. American Journal of Industrial Medicine. 32(4). 413–416. 16 indexed citations

19.

Bartels, H., J. Theisen, Hermann Berger, & Siewert. (1997). [Interventional therapy of intra-abdominal abscess: outcome and limits].. PubMed. 114. 956–8. 5 indexed citations

20.

Theisen, J., et al.. (1979). Anmerkungen zur Infusionstherapie bei akutem H�rsturz. European Archives of Oto-Rhino-Laryngology. 223(2-4). 241–243. 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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