Grigorios I. Leontiadis

11.5k total citations · 6 hit papers
87 papers, 6.3k citations indexed

About

Grigorios I. Leontiadis is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Grigorios I. Leontiadis has authored 87 papers receiving a total of 6.3k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Surgery, 44 papers in Gastroenterology and 23 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Grigorios I. Leontiadis's work include Helicobacter pylori-related gastroenterology studies (26 papers), Gastrointestinal Bleeding Diagnosis and Treatment (20 papers) and Gastroesophageal reflux and treatments (17 papers). Grigorios I. Leontiadis is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (26 papers), Gastrointestinal Bleeding Diagnosis and Treatment (20 papers) and Gastroesophageal reflux and treatments (17 papers). Grigorios I. Leontiadis collaborates with scholars based in Canada, United States and United Kingdom. Grigorios I. Leontiadis's co-authors include Paul Moayyedi, Colin W. Howden, Yuhong Yuan, Frances Tse, William D. Chey, Steven F. Moss, Rapat Pittayanon, Alan Barkun, Michael G. Surette and Jennifer Lau and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and Gut.

In The Last Decade

Grigorios I. Leontiadis

84 papers receiving 6.2k citations

Hit Papers

ACG Clinical Guideline: Treatment of Helicobacter pylori ... 2015 2026 2018 2022 2017 2016 2019 2019 2015 250 500 750 1000
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. ACG Clinical Guideline: Treatment of Helicobacter pylori Infection
    2017 1.1k citations Grigorios I. Leontiadis, Colin W. Howden et al. The American Journal of Gastroenterology profile →
  2. The Toronto Consensus for the Treatment of Helicobacter pylori Infection in Adults
    2016 652 citations Carlo A Fallone, Naoki Chiba et al. Gastroenterology profile →
  3. Gut Microbiota in Patients With Irritable Bowel Syndrome—A Systematic Review
    2019 491 citations Rapat Pittayanon, Jennifer Lau et al. Gastroenterology profile →
  4. Differences in Gut Microbiota in Patients With vs Without Inflammatory Bowel Diseases: A Systematic Review
    2019 438 citations Rapat Pittayanon, Jennifer Lau et al. Gastroenterology profile →
  5. The Toronto Consensus Statements for the Management of Inflammatory Bowel Disease in Pregnancy
    2015 311 citations Grigorios I. Leontiadis, Frances Tse et al. Gastroenterology profile →
  6. ACG Clinical Guideline: Upper Gastrointestinal and Ulcer Bleeding
    2021 246 citations Alan Barkun, Grigorios I. Leontiadis et al. The American Journal of Gastroenterology profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Grigorios I. Leontiadis Canada 34 4.0k 2.8k 1.6k 778 686 87 6.3k
Young Soo Park South Korea 41 3.5k 0.9× 1.5k 0.5× 2.2k 1.4× 835 1.1× 318 0.5× 281 5.7k
Xavier Calvet Spain 53 6.0k 1.5× 3.5k 1.3× 2.2k 1.4× 421 0.5× 852 1.2× 321 9.0k
Sander Veldhuyzen van Zanten Canada 37 6.7k 1.7× 5.3k 1.9× 1.7k 1.1× 232 0.3× 226 0.3× 158 9.3k
Colin W. Howden United States 58 8.3k 2.1× 6.6k 2.4× 3.1k 2.0× 461 0.6× 206 0.3× 263 11.5k
Veronica Ojetti Italy 36 1.9k 0.5× 1.2k 0.4× 458 0.3× 1.0k 1.3× 481 0.7× 149 4.2k
Marcello Candelli Italy 33 1.8k 0.5× 1.0k 0.4× 505 0.3× 959 1.2× 374 0.5× 186 4.1k
Vincenzo Savarino Italy 55 7.0k 1.8× 6.0k 2.2× 1.4k 0.9× 446 0.6× 573 0.8× 363 10.1k
Bart Maes Belgium 53 2.7k 0.7× 1.1k 0.4× 1.1k 0.7× 694 0.9× 543 0.8× 215 8.9k
Gioacchino Leandro Italy 68 6.9k 1.7× 2.6k 0.9× 2.7k 1.7× 718 0.9× 575 0.8× 321 14.9k
Anthony Axon United Kingdom 50 9.9k 2.5× 4.8k 1.7× 3.5k 2.3× 663 0.9× 369 0.5× 163 11.7k

Countries citing papers authored by Grigorios I. Leontiadis

Since Specialization
Citations

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

Fields of papers citing papers by Grigorios I. Leontiadis

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Grigorios I. Leontiadis. 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 Grigorios I. Leontiadis. The network helps show where Grigorios I. Leontiadis may publish in the future.

Co-authorship network of co-authors of Grigorios I. Leontiadis

This figure shows the co-authorship network connecting the top 25 collaborators of Grigorios I. Leontiadis. A scholar is included among the top collaborators of Grigorios I. Leontiadis 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 Grigorios I. Leontiadis. Grigorios I. Leontiadis 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.
2.
Piggott, Thomas, Grigorios I. Leontiadis, Alina Herrmann, et al.. (2024). We're living through a planetary health crisis: health guidelines must consider planetary health. The Lancet Planetary Health. 8(12). e979–e980. 3 indexed citations
3.
Anvari, Sama, et al.. (2024). Sustainable practice in gastroenterology: travel-related CO2 emissions for gastroenterology clinic appointments in Canada. Journal of the Canadian Association of Gastroenterology. 8(1). 7–12.
4.
Piggott, Thomas, Alina Herrmann, Andrea Darzi, et al.. (2024). Considering planetary health in health guidelines and health technology assessments: a scoping review protocol. Systematic Reviews. 13(1). 163–163. 3 indexed citations
5.
Khan, Rishad, Yibing Ruan, Yuhong Yuan, et al.. (2024). Relative Efficacies of Interventions to Improve the Quality of Screening-Related Colonoscopy: A Systematic Review and Network Meta-Analysis of Randomized Controlled Trials. Gastroenterology. 167(3). 560–590. 6 indexed citations
6.
Khan, Rishad, Marcus Vaska, Yibing Ruan, et al.. (2022). Interventions to improve the quality of screening-related colonoscopy: protocol for a systematic review and network meta-analysis of randomised controlled trials. BMJ Open. 12(11). e061855–e061855. 3 indexed citations
7.
Ford, Alexander C., et al.. (2022). Efficacy of Helicobacter pylori eradication therapy for functional dyspepsia: updated systematic review and meta-analysis. Gut. 71(10). 1967–1975. 43 indexed citations
8.
Forbes, Nauzer, Grigorios I. Leontiadis, Marcus Vaska, et al.. (2021). Adverse events associated with endoscopic retrograde cholangiopancreatography: protocol for a systematic review and meta-analysis. BMJ Open. 11(8). e053302–e053302. 4 indexed citations
9.
Tse, Frances, Paul Moayyedi, Kevin Waschke, et al.. (2021). COVID-19 Vaccination in Patients With Inflammatory Bowel Disease: Communiqué From the Canadian Association of Gastroenterology. Journal of the Canadian Association of Gastroenterology. 4(1). 49–49. 10 indexed citations
10.
Pittayanon, Rapat, Jennifer Lau, Yuhong Yuan, et al.. (2019). Gut Microbiota in Patients With Irritable Bowel Syndrome—A Systematic Review. Gastroenterology. 157(1). 97–108. 491 indexed citations breakdown →
11.
Pittayanon, Rapat, Jennifer Lau, Grigorios I. Leontiadis, et al.. (2019). Differences in Gut Microbiota in Patients With vs Without Inflammatory Bowel Diseases: A Systematic Review. Gastroenterology. 158(4). 930–946.e1. 438 indexed citations breakdown →
12.
13.
Pittayanon, Rapat, Yuhong Yuan, Natasha Bollegala, et al.. (2018). Prokinetics for Functional Dyspepsia: A Systematic Review and Meta-Analysis of Randomized Control Trials. The American Journal of Gastroenterology. 114(2). 233–243. 73 indexed citations
14.
Pittayanon, Rapat, Yuhong Yuan, Natasha Bollegala, et al.. (2018). Prokinetics for functional dyspepsia. Cochrane Database of Systematic Reviews. 2018(10). CD009431–CD009431. 37 indexed citations
15.
Enns, Robert, Lawrence Hookey, David Armstrong, et al.. (2017). Clinical Practice Guidelines for the Use of Video Capsule Endoscopy. Gastroenterology. 152(3). 497–514. 254 indexed citations
16.
Fallone, Carlo A, Naoki Chiba, Sander Veldhuyzen van Zanten, et al.. (2016). The Toronto Consensus for the Treatment of Helicobacter pylori Infection in Adults. Gastroenterology. 151(1). 51–69.e14. 652 indexed citations breakdown →
17.
Anglin, Rebecca, Yuhong Yuan, Paul Moayyedi, et al.. (2014). Risk of Upper Gastrointestinal Bleeding With Selective Serotonin Reuptake Inhibitors With or Without Concurrent NonSteroidal Anti-Inflammatory Use: A Systematic Review and Meta-Analysis. The American Journal of Gastroenterology. 109(6). 811–819. 148 indexed citations
18.
Moayyedi, Paul & Grigorios I. Leontiadis. (2012). The risks of PPI therapy. Nature Reviews Gastroenterology & Hepatology. 9(3). 132–139. 81 indexed citations
19.
Bollegala, Natasha, Reena Khanna, Paul Moayyedi, & Grigorios I. Leontiadis. (2011). Prokinetics for functional dyspepsia. Cochrane Database of Systematic Reviews. 3 indexed citations
20.
Leontiadis, Grigorios I., A Sreedharan, S Dorward, et al.. (2007). Systematic reviews of the clinical effectiveness and cost-effectiveness of proton pump inhibitors in acute upper gastrointestinal bleeding. Health Technology Assessment. 11(51). iii–iv, 1. 149 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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