John K. Marshall
Impact in
- Gastroenterology top 0.05%
- Gastrointestinal motility and disorders
- Gastroesophageal reflux and treatments
- Genetics top 0.2%
- Inflammatory Bowel Disease
Papers in
-
- Gastrointestinal motility and disorders 35
- Gastroesophageal reflux and treatments 17
- Genetics 158
- Inflammatory Bowel Disease 155
- Co-authors
- Paul MoayyediMarroon ThabaneE. Jan IrvineNeeraj NarulaDavid ArmstrongWalter ReinischStephen M. CollinsJennifer Leonard
- Journals
- Gastroenterology (36 papers)Journal of Crohn s and Colitis (31 papers)The American Journal of Gastroenterology (26 papers)Inflammatory Bowel Diseases (21 papers)Clinical Gastroenterology and Hepatology (11 papers)
- Partner nations
- CanadaUnited StatesAustria
In The Last Decade
John K. Marshall
303 papers receiving 12.6k citations
Hit Papers
Peers
Comparison fields: 5 of 184
- Gastroenterology 4.0k
- Genetics 3.8k
- Epidemiology 3.8k
- Infectious Diseases 1.9k
- Surgery 4.5k
Countries citing papers authored by John K. Marshall
This map shows the geographic impact of John K. Marshall'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 John K. Marshall with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John K. Marshall more than expected).
Fields of papers citing papers by John K. Marshall
This network shows the impact of papers produced by John K. Marshall. 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 John K. Marshall. The network helps show where John K. Marshall may publish in the future.
Co-authorship network
The 25 scholars most cited alongside John K. Marshall, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 2025 | 2 | |
| 2 | 2025 | 0 | |
| 3 | 2025 | 0 | |
| 4 | 2025 | 0 | |
| 5 | 2024 | 0 | |
| 6 | 2024 | 2 | |
| 7 | 2024 | 2 | |
| 8 | 2024 | 1 | |
| 9 | 2022 | 2 | |
| 10 | 2022 | 40 | |
| 11 | 2022 | 8 | |
| 12 | 2022 | 5 | |
| 13 | 2022 | 9 | |
| 14 | 2021 | 16 | |
| 15 | 2020 | 14 | |
| 16 | 2019 | 65 | |
| 17 | 2013 | 113 | |
| 18 | Basic field data collection procedures for the grassland biome, 1972 season | 2007 | 0 |
| 19 | 1999 | 29 | |
| 20 | 1994 | 4 |
About John K. Marshall
John K. Marshall is a scholar working on Gastroenterology, Genetics, Epidemiology, Surgery and Speech and Hearing, having authored 325 papers that have together received 13.1k indexed citations. Recurring topics across this work include Inflammatory Bowel Disease (155 papers), Microscopic Colitis (116 papers), Eosinophilic Esophagitis (43 papers), Helicobacter pylori-related gastroenterology studies (37 papers), Gastrointestinal motility and disorders (35 papers), Gastroesophageal reflux and treatments (17 papers), Adolescent and Pediatric Healthcare (16 papers) and Clostridium difficile and Clostridium perfringens research (16 papers). The work is most often cited by research in Gastroenterology (4.0k citations), Genetics (3.8k citations), Epidemiology (3.8k citations), Infectious Diseases (1.9k citations) and Surgery (4.5k citations). John K. Marshall has collaborated with scholars based in Canada, United States and Austria. Frequent co-authors include Paul Moayyedi, Marroon Thabane, E. Jan Irvine, Neeraj Narula, David Armstrong, Walter Reinisch, Stephen M. Collins, Jennifer Leonard, Amit X. Garg and William F. Clark. Their work appears in journals such as Gastroenterology, Journal of Crohn s and Colitis, The American Journal of Gastroenterology, Inflammatory Bowel Diseases and Clinical Gastroenterology and Hepatology.
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.