J Leyden

1.1k total citations
26 papers, 597 citations indexed

About

J Leyden is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, J Leyden has authored 26 papers receiving a total of 597 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Surgery, 9 papers in Pulmonary and Respiratory Medicine and 9 papers in Oncology. Recurrent topics in J Leyden's work include Colorectal Cancer Screening and Detection (7 papers), Esophageal and GI Pathology (7 papers) and Esophageal Cancer Research and Treatment (4 papers). J Leyden is often cited by papers focused on Colorectal Cancer Screening and Detection (7 papers), Esophageal and GI Pathology (7 papers) and Esophageal Cancer Research and Treatment (4 papers). J Leyden collaborates with scholars based in Ireland, United Kingdom and United States. J Leyden's co-authors include Padraic MacMathúna, Alan C. Moss, Eva Morris, Eugene B. Hanlon, Irving Itzkan, Ram Chuttani, Edward Vitkin, Le Qiu, Douglas K. Pleskow and Mark D. Modell and has published in prestigious journals such as Nature Medicine, Gut and Cochrane Database of Systematic Reviews.

In The Last Decade

J Leyden

23 papers receiving 575 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J Leyden Ireland 8 369 304 212 93 75 26 597
Władysław Januszewicz Poland 16 434 1.2× 347 1.1× 204 1.0× 90 1.0× 107 1.4× 48 734
Tilman Laubert Germany 14 323 0.9× 101 0.3× 289 1.4× 62 0.7× 19 0.3× 56 562
Yasutaka Nakanishi Japan 12 82 0.2× 114 0.4× 105 0.5× 23 0.2× 62 0.8× 23 557
Teruo Kouzu Japan 15 347 0.9× 190 0.6× 173 0.8× 28 0.3× 222 3.0× 50 572
Hiroshi Nimura Japan 13 226 0.6× 419 1.4× 156 0.7× 66 0.7× 221 2.9× 38 620
Yuichiro Ikebuchi Japan 10 209 0.6× 111 0.4× 86 0.4× 27 0.3× 134 1.8× 60 421
Neil Bhardwaj United Kingdom 13 168 0.5× 114 0.4× 166 0.8× 130 1.4× 6 0.1× 31 547
So Jeong Lee South Korea 12 130 0.4× 123 0.4× 204 1.0× 41 0.4× 35 0.5× 52 447
Fumihiko Nakanishi Japan 11 311 0.8× 383 1.3× 69 0.3× 8 0.1× 172 2.3× 23 691
Dietmar Cholewa Switzerland 9 130 0.4× 61 0.2× 99 0.5× 29 0.3× 29 0.4× 29 405

Countries citing papers authored by J Leyden

Since Specialization
Citations

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

Fields of papers citing papers by J Leyden

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J Leyden

This figure shows the co-authorship network connecting the top 25 collaborators of J Leyden. A scholar is included among the top collaborators of J Leyden 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 Leyden. J Leyden 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.
Matthews, T, Chris Barry, Helen E.J. Tyrrell, et al.. (2025). Low Yield of Surveillance Endoscopy in Severe Oesophagitis: A 1700-Patient Retrospective Cohort Study. Digestive Diseases and Sciences. 71(1). 193–202.
2.
Slattery, Eoin, et al.. (2025). Sustained success in endoscopic performance demonstrated by the Irish National Endoscopy Quality Improvement Programme. Endoscopy International Open. 13(CP). a25209965–a25209965.
3.
Bennett, Gayle, et al.. (2024). Capturing the incidence of patient agitation amongst conscious sedation ERCPs and the impact on therapeutic outcomes. European Journal of Gastroenterology & Hepatology. 37(3). 279–286.
4.
Leyden, J, et al.. (2023). Unlocking quality in endoscopic mucosal resection. World Journal of Gastrointestinal Endoscopy. 15(5). 338–353. 1 indexed citations
5.
Horgan, Gareth, et al.. (2023). Rates and outcomes of testing for lynch syndrome in a national colorectal cancer screening programme. Cancer Epidemiology. 82. 102314–102314. 1 indexed citations
6.
Sheridan, Juliette, Peter Doran, J Leyden, et al.. (2023). P483 Golimumab response in Ulcerative Colitis as early as week 2: What can we take from this?. Journal of Crohn s and Colitis. 17(Supplement_1). i614–i615. 1 indexed citations
7.
O’Grady, John, J Leyden, Padraic MacMathúna, Stephen Stewart, & Thomas Kelleher. (2020). ERCP and SARS-COV-2: an urgent procedure that should be immune. Scandinavian Journal of Gastroenterology. 55(8). 976–978. 7 indexed citations
8.
Walshe, Margaret, Robert A. Moran, Marie Boyle, et al.. (2017). High-risk family colorectal cancer screening service in Ireland: Critical review of clinical outcomes. Cancer Epidemiology. 50(Pt A). 30–38. 2 indexed citations
9.
Murphy, Kellie E., Conor Lahiff, Padraic MacMathúna, & J Leyden. (2013). STREAMLINING INPATIENT COLONOSCOPY IN A TERTIARY CARE GI SERVICE. Gut. 62(Suppl 2). A41.1–A41. 1 indexed citations
10.
McGlacken‐Byrne, Sinead, Conor Lahiff, Padraic MacMathúna, & J Leyden. (2013). A REVIEW OF GASTRIC ULCER FOLLOW-UP PRACTICES IN A TERTIARY CARE GASTROENTEROLOGY SERVICE. Gut. 62(Suppl 2). A40.2–A40. 1 indexed citations
11.
Doherty, Glen, et al.. (2011). Inter-endoscopist agreement in diagnosis of Barrett's oesophagus. Frontline Gastroenterology. 2(3). 162–167. 1 indexed citations
12.
Qiu, Le, Douglas K. Pleskow, Ram Chuttani, et al.. (2010). Multispectral scanning during endoscopy guides biopsy of dysplasia in Barrett's esophagus. Nature Medicine. 16(5). 603–606. 128 indexed citations
13.
Harewood, Gavin C., J Leyden, Frank E. Murray, & Stephen Patchett. (2008). Evaluation of Formal Feedback On Endoscopic Competence Among Trainees: The Effect Trial. Gastrointestinal Endoscopy. 67(5). AB294–AB294. 3 indexed citations
14.
Moss, Alan C., Eva Morris, J Leyden, & Padraic MacMathúna. (2007). Do the benefits of metal stents justify the costs? A systematic review and meta-analysis of trials comparing endoscopic stents for malignant biliary obstruction. European Journal of Gastroenterology & Hepatology. 19(12). 1119–1124. 129 indexed citations
15.
Leyden, J, et al.. (2006). The Celtic coincidence — the frequency and clinical characterisation of hereditary haemochromatosis in patients with coeliac disease. Irish Journal of Medical Science (1971 -). 175(1). 32–36. 2 indexed citations
16.
Leyden, J, David Murray, Alan C. Moss, et al.. (2006). Net1 and Myeov: computationally identified mediators of gastric cancer. British Journal of Cancer. 94(8). 1204–1212. 62 indexed citations
17.
Moss, Alan C., Eva Morris, J Leyden, & Padraic MacMathúna. (2006). Malignant distal biliary obstruction: A systematic review and meta-analysis of endoscopic and surgical bypass results. Cancer Treatment Reviews. 33(2). 213–221. 134 indexed citations
18.
Leyden, J, et al.. (2005). An unusual finding in a patient with iron deficiency anaemia. Gut. 54(10). 1491–1491. 2 indexed citations
19.
Doran, Peter, et al.. (2005). Bioinformatic promoter analysis can identify functionally significant genes in colorectal cancer. Endoscopy. 37(5). 1 indexed citations
20.
Leyden, J, et al.. (1972). 20 to 30 kW Xenon Compact Arc Lamps for Searchlights and Solar Simulators. Journal of the Illuminating Engineering Society. 2(1). 8–18. 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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