Jan J. Koornstra

2.8k total citations
55 papers, 1.6k citations indexed

About

Jan J. Koornstra is a scholar working on Oncology, Surgery and Pathology and Forensic Medicine. According to data from OpenAlex, Jan J. Koornstra has authored 55 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Oncology, 25 papers in Surgery and 23 papers in Pathology and Forensic Medicine. Recurrent topics in Jan J. Koornstra's work include Colorectal Cancer Screening and Detection (27 papers), Genetic factors in colorectal cancer (23 papers) and Gastric Cancer Management and Outcomes (15 papers). Jan J. Koornstra is often cited by papers focused on Colorectal Cancer Screening and Detection (27 papers), Genetic factors in colorectal cancer (23 papers) and Gastric Cancer Management and Outcomes (15 papers). Jan J. Koornstra collaborates with scholars based in Netherlands, Germany and United States. Jan J. Koornstra's co-authors include Jan H. Kleibeuker, Rinse K. Weersma, Jessie Westerhof, Harry Hollema, Hans F. A. Vasen, Elisabeth G.E. de Vries, Evelien Dekker, Marian J.E. Mourits, Rolf H. Sijmons and Anna M. Leliveld and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and Gut.

In The Last Decade

Jan J. Koornstra

54 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan J. Koornstra Netherlands 23 767 757 698 455 347 55 1.6k
Michael Stamatakos Greece 18 225 0.3× 597 0.8× 310 0.4× 221 0.5× 148 0.4× 57 1.2k
A. S. Jones United Kingdom 23 567 0.7× 741 1.0× 310 0.4× 164 0.4× 59 0.2× 55 1.6k
Nikolaos Gouvas Greece 19 858 1.1× 833 1.1× 278 0.4× 90 0.2× 82 0.2× 43 1.3k
K. A. Forde United States 17 424 0.6× 464 0.6× 344 0.5× 141 0.3× 133 0.4× 29 833
Odysseas Zoras Greece 18 341 0.4× 506 0.7× 142 0.2× 94 0.2× 104 0.3× 50 1.1k
Hidenori Mukaida Japan 14 277 0.4× 528 0.7× 382 0.5× 62 0.1× 109 0.3× 74 905
Jung Ho Park South Korea 14 461 0.6× 434 0.6× 358 0.5× 39 0.1× 232 0.7× 37 922
Scott H. Saul United States 20 224 0.3× 556 0.7× 222 0.3× 241 0.5× 201 0.6× 34 1.1k
Kwang Hyun Kim South Korea 23 336 0.4× 849 1.1× 402 0.6× 129 0.3× 33 0.1× 78 1.4k
Siegbert Faiss Germany 21 856 1.1× 609 0.8× 460 0.7× 55 0.1× 178 0.5× 90 1.7k

Countries citing papers authored by Jan J. Koornstra

Since Specialization
Citations

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

Fields of papers citing papers by Jan J. Koornstra

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Jan J. Koornstra

This figure shows the co-authorship network connecting the top 25 collaborators of Jan J. Koornstra. A scholar is included among the top collaborators of Jan J. Koornstra 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 Jan J. Koornstra. Jan J. Koornstra 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.
Boer, Nanne K.H. de, Monique E. van Leerdam, Evelien Dekker, et al.. (2024). Fecal Immunochemical Test to Detect Colorectal Neoplasia in Lynch Syndrome: A Prospective Multicenter Study. The American Journal of Gastroenterology. 120(3). 632–641. 3 indexed citations
2.
Ramsoekh, Dewkoemar, Emma Daulton, Sofie Bosch, et al.. (2024). Faecal Volatile Organic Compounds to Detect Colorectal Neoplasia in Lynch Syndrome—A Prospective Longitudinal Multicentre Study. Alimentary Pharmacology & Therapeutics. 61(1). 145–158. 2 indexed citations
3.
Nielsen, Maartje, Manon Suerink, Jan J. Koornstra, et al.. (2023). PMS2-associated Lynch syndrome: Past, present and future. Frontiers in Oncology. 13. 1127329–1127329. 7 indexed citations
4.
Newcomb, Polly A., Tanya M. Bisseling, Jane C. Figueiredo, et al.. (2020). Associations of Height With the Risks of Colorectal and Endometrial Cancer in Persons With Lynch Syndrome. American Journal of Epidemiology. 190(2). 230–238. 2 indexed citations
5.
Bleijenberg, Arne, Monique E. van Leerdam, Jan J. Koornstra, et al.. (2020). Substantial and sustained improvement of serrated polyp detection after a simple educational intervention: results from a prospective controlled trial. Gut. 69(12). 2150–2158. 17 indexed citations
6.
Vasen, Hans F. A., et al.. (2020). Diet quality and colorectal tumor risk in persons with Lynch syndrome. Cancer Epidemiology. 69. 101809–101809. 4 indexed citations
7.
Bleijenberg, Arne, Joep IJspeert, Yasmijn van Herwaarden, et al.. (2019). Personalised surveillance for serrated polyposis syndrome: results from a prospective 5-year international cohort study. Gut. 69(1). 112–121. 30 indexed citations
8.
Dekker, Evelien, Annemieke Cats, Fokko M. Nagengast, et al.. (2019). Effect of chromoendoscopy in the proximal colon on colorectal neoplasia detection in Lynch syndrome: a multicenter randomized controlled trial. Gastrointestinal Endoscopy. 90(4). 624–632. 19 indexed citations
9.
Bronzwaer, Maxime, Annekatrien Depla, Niels van Lelyveld, et al.. (2018). Quality assurance of colonoscopy within the Dutch national colorectal cancer screening program. Gastrointestinal Endoscopy. 89(1). 1–13. 51 indexed citations
10.
Argillander, Tanja E., Jan J. Koornstra, Mariëtte van Kouwen, et al.. (2018). Features of incident colorectal cancer in Lynch syndrome. United European Gastroenterology Journal. 6(8). 1215–1222. 9 indexed citations
11.
Lansdorp‐Vogelaar, Iris, Ewout W. Steyerberg, S. Lucas Goede, et al.. (2015). Adherence to surveillance guidelines after removal of colorectal adenomas: a large, community-based study. Gut. 64(10). 1584–1592. 70 indexed citations
12.
Koornstra, Jan J., et al.. (2010). Listening to music does not reduce pain during sigmoidoscopy. European Journal of Gastroenterology & Hepatology. 22(8). 942–945. 17 indexed citations
13.
Koornstra, Jan J., et al.. (2009). Colonoscopy training for nurse endoscopists: a feasibility study. Gastrointestinal Endoscopy. 69(3). 688–695. 29 indexed citations
14.
Koornstra, Jan J., Marian J.E. Mourits, Rolf H. Sijmons, et al.. (2009). Management of extracolonic tumours in patients with Lynch syndrome. The Lancet Oncology. 10(4). 400–408. 134 indexed citations
15.
Koornstra, Jan J. & Rinse K. Weersma. (2008). Management of rectal foreign bodies: Description of a new technique and clinical practice guidelines. World Journal of Gastroenterology. 14(27). 4403–4403. 54 indexed citations
16.
Koornstra, Jan J., Elisabeth G.E. de Vries, & Robert J. Porte. (2008). Improvements in small bowel carcinoid diagnosis and staging: 18F-DOPA PET, capsule endoscopy and double balloon enteroscopy. Digestive and Liver Disease. 41(7). e35–e38. 11 indexed citations
17.
Koornstra, Jan J., Lucía C. Fry, & Klaus Mönkemüller. (2008). ERCP with the Balloon-Assisted Enteroscopy Technique: A Systematic Review. Digestive Diseases. 26(4). 324–329. 42 indexed citations
18.
Westerhof, Jessie, Jan J. Koornstra, & Rinse K. Weersma. (2008). Can we reduce capsule endoscopy reading times?. Gastrointestinal Endoscopy. 69(3). 497–502. 43 indexed citations
19.
Koornstra, Jan J., Jelle Wesseling, Andrea E. van der Meulen‐de Jong, et al.. (2007). Increased risk of colorectal neoplasia in asymptomatic liver-transplant recipients: Table 1. Gut. 56(6). 892–893. 12 indexed citations
20.
Koornstra, Jan J.. (2007). Surveillance colonoscopy practice in Lynch syndrome in the Netherlands: A nationwide survey. World Journal of Gastroenterology. 13(34). 4658–4659. 3 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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