J. J. Kolkman

1.1k total citations
17 papers, 785 citations indexed

About

J. J. Kolkman is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, J. J. Kolkman has authored 17 papers receiving a total of 785 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Surgery, 5 papers in Pulmonary and Respiratory Medicine and 5 papers in Gastroenterology. Recurrent topics in J. J. Kolkman's work include Helicobacter pylori-related gastroenterology studies (5 papers), Gastric Cancer Management and Outcomes (4 papers) and Gastroesophageal reflux and treatments (3 papers). J. J. Kolkman is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (5 papers), Gastric Cancer Management and Outcomes (4 papers) and Gastroesophageal reflux and treatments (3 papers). J. J. Kolkman collaborates with scholars based in Netherlands, France and Australia. J. J. Kolkman's co-authors include M. Oudkerk Pool, B. Mary E. von Blomberg, S. G. M. Meuwissen, A. S. Peña, M. J. Giphart, P.J. Kostense, Geziena M. Th. Schreuder, J. Bart A. Crusius, S.G.M. Meuwissen and JH Kleibeuker and has published in prestigious journals such as Gastroenterology, Gut and Alimentary Pharmacology & Therapeutics.

In The Last Decade

J. J. Kolkman

17 papers receiving 750 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. J. Kolkman Netherlands 8 332 196 179 171 161 17 785
G Fedeli Italy 20 590 1.8× 200 1.0× 191 1.1× 243 1.4× 194 1.2× 55 1.1k
M. Oudkerk Pool Netherlands 10 160 0.5× 268 1.4× 74 0.4× 171 1.0× 116 0.7× 18 747
J S Goff United States 15 499 1.5× 116 0.6× 223 1.2× 459 2.7× 244 1.5× 27 1.2k
Hideo Shishido Japan 17 274 0.8× 216 1.1× 130 0.7× 217 1.3× 123 0.8× 61 932
Dimitrios Polymeros Greece 16 330 1.0× 88 0.4× 183 1.0× 217 1.3× 201 1.2× 43 786
Rosalind Sim United Kingdom 7 244 0.7× 90 0.5× 69 0.4× 185 1.1× 95 0.6× 9 632
Zarife Kuloğlu Türkiye 14 208 0.6× 218 1.1× 171 1.0× 194 1.1× 57 0.4× 82 713
Sandra Clipp United States 13 285 0.9× 105 0.5× 264 1.5× 325 1.9× 124 0.8× 17 908
Badr Al‐Bawardy United States 14 247 0.7× 87 0.4× 182 1.0× 260 1.5× 103 0.6× 89 665
G. Di Febo Italy 19 387 1.2× 44 0.2× 248 1.4× 216 1.3× 80 0.5× 41 973

Countries citing papers authored by J. J. Kolkman

Since Specialization
Citations

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

Fields of papers citing papers by J. J. Kolkman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

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

All Works

17 of 17 papers shown
1.
Dullemen, Hendrik M. van, et al.. (2019). <p>Pancreatic ductal adenocarcinoma and chronic pancreatitis may be diagnosed by exhaled-breath profiles: a multicenter pilot study</p>. Clinical and Experimental Gastroenterology. Volume 12. 385–390. 7 indexed citations
2.
Steege, Rinze W. F. ter, et al.. (2012). Splanchnic Artery Stenosis and Abdominal Complaints: Clinical History Is of Limited Value in Detection of Gastrointestinal Ischemia. World Journal of Surgery. 36(4). 793–799. 32 indexed citations
3.
Asseldonk, Dirk P. van, Elisabeth Bloemena, G. den Hartog, et al.. (2010). Liver Histology of Ibd Patients Who Are Treated with 6-Thioguanine Due to Failure of Conventional Thiopurines Reveals Very Few Cases of Nodular Regenerative Hyperplasia. Pure Amsterdam UMC. 100(7). 464–464. 4 indexed citations
4.
Droste, J S Terhaar Sive, M. E. Craanen, J. J. Kolkman, & Chris J.J. Mulder. (2006). Dutch endoscopic capacity in the era of colorectal cancer screening.. PubMed. 64(10). 371–3. 27 indexed citations
5.
Baarlen, Joop van, et al.. (2005). Microscopic colitis: prevalence and distribution throughout the colon in patients with chronic diarrhoea.. PubMed. 63(4). 137–40. 59 indexed citations
6.
7.
Kolkman, J. J., et al.. (2003). [Calprotectin: a fecal marker for diagnosis and follow-up in patients with chronic inflammatory bowel disease].. PubMed. 147(48). 2360–5. 6 indexed citations
8.
Otte, Johannes A., R.H. Geelkerken, A. B. Huisman, & J. J. Kolkman. (1999). Assessment of the incidence of chronic gastrointestinal ischemia after institution of a multidisciplinary working group. 2. 915. 3 indexed citations
9.
Oostveen, Ellie, et al.. (1998). Heavy exercise of short duration may provoke gastric ischemia in healthy subjects. Gastroenterology. 114. A404–A404. 1 indexed citations
10.
Kolkman, J. J., Tao Tan, M. Oudkerk Pool, et al.. (1997). Ranitidine bismuth citrate with clarithromycin versus omeprazole with amoxycillin in the cure of Helicobacter pylori infection. Alimentary Pharmacology & Therapeutics. 11(6). 1123–1129. 7 indexed citations
11.
Kolkman, J. J. & S.G.M. Meuwissen. (1996). A Review on Treatment of Bleeding Peptic Ulcer: A Collaborative Task of Gastroenterologist and Surgeon. Scandinavian Journal of Gastroenterology. 31(sup218). 16–25. 36 indexed citations
12.
Crusius, J. Bart A., M. Oudkerk Pool, J. J. Kolkman, et al.. (1996). Secretion of Tumour Necrosis Factor α and Lymphotoxin α in Relation to Polymorphisms in the TNF Genes and HLA‐DR Alleles. Relevance for Inflammatory Bowel Disease. Scandinavian Journal of Immunology. 43(4). 456–463. 348 indexed citations
13.
Pool, M. Oudkerk, et al.. (1995). Serum Nitrate Levels in Ulcerative Colitis and Crohn's Disease. Scandinavian Journal of Gastroenterology. 30(8). 784–788. 71 indexed citations
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Kolkman, J. J., et al.. (1995). Gastric tonometry during a standardized test meal is dependant upon adequate acid suppression and timing of measurement. Gastroenterology. 108(4). A133–A133. 1 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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