Guillermo Zarama

1.9k total citations · 1 hit paper
19 papers, 1.5k citations indexed

About

Guillermo Zarama is a scholar working on Surgery, Gastroenterology and Genetics. According to data from OpenAlex, Guillermo Zarama has authored 19 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Surgery, 3 papers in Gastroenterology and 3 papers in Genetics. Recurrent topics in Guillermo Zarama's work include Helicobacter pylori-related gastroenterology studies (15 papers), Eosinophilic Esophagitis (4 papers) and Gastroesophageal reflux and treatments (3 papers). Guillermo Zarama is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (15 papers), Eosinophilic Esophagitis (4 papers) and Gastroesophageal reflux and treatments (3 papers). Guillermo Zarama collaborates with scholars based in United States, Colombia and Costa Rica. Guillermo Zarama's co-authors include Bernardo Ruiz, Diego Zavala, Elizabeth T. H. Fontham, William Haenszel, Pelayo Correa, Elizabeth Fontham, P Corréa, Tito Collazos, Luis Eduardo Bravo and José Luis Realpe and has published in prestigious journals such as JNCI Journal of the National Cancer Institute, Cancer and International Journal of Cancer.

In The Last Decade

Guillermo Zarama

19 papers receiving 1.5k citations

Hit Papers

align trajectories

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.

Inducible nitric oxide synthase, nitrotyrosine, and apoptosis in Helicobacter pylori gastritis: effect of antibiotics and antioxidants.

1996 422 citations E. E. Mannick, Luis Eduardo Bravo et al. PubMed profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Guillermo Zarama United States	12	1.2k	647	315	208	161	19	1.5k
Pelayo Correa United States	10	2.0k 1.6×	908 1.4×	594 1.9×	310 1.5×	313 1.9×	11	2.4k
Mae F. Go United States	19	832 0.7×	254 0.4×	291 0.9×	205 1.0×	115 0.7×	52	1.1k
José Luis Realpe United States	11	851 0.7×	362 0.6×	297 0.9×	129 0.6×	143 0.9×	15	1.1k
Daisuke Shirasaka Japan	18	789 0.6×	250 0.4×	287 0.9×	229 1.1×	212 1.3×	64	1.2k
Theodoros Rokkas Greece	18	2.4k 2.0×	1.0k 1.6×	247 0.8×	1.1k 5.4×	260 1.6×	29	2.9k
Jorge Vivas France	17	598 0.5×	336 0.5×	155 0.5×	62 0.3×	90 0.6×	26	791
Abdul Aziz Rani Indonesia	14	950 0.8×	476 0.7×	93 0.3×	490 2.4×	82 0.5×	47	1.2k
B J Johnston United Kingdom	11	516 0.4×	222 0.3×	69 0.2×	187 0.9×	71 0.4×	32	776
Tomoya Ohmae Japan	12	360 0.3×	164 0.3×	260 0.8×	66 0.3×	205 1.3×	17	828

Countries citing papers authored by Guillermo Zarama

Since Specialization

Citations

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

Fields of papers citing papers by Guillermo Zarama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Guillermo Zarama

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

All Works

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19 of 19 papers shown

Fischbach, Lori, Luis Eduardo Bravo, Guillermo Zarama, et al.. (2009). A Randomized Clinical Trial to Determine the Efficacy of Regimens Containing Clarithromycin, Metronidazole, and Amoxicillin Among Histologic Subgroups for Helicobacter pylori Eradication in a Developing Country. Helicobacter. 14(2). 100–108. 16 indexed citations

Bravo, Luis Eduardo, Juan Carlos Bravo, José Luis Realpe, et al.. (2008). Source of variation in the diagnosis of Helicobacter pylori-associated multifocal atrophic gastritis.. Colombia medica. 39(1). 58–65. 3 indexed citations

Bravo, Luis Eduardo, Juan Carlos Bravo, José Luis Realpe, et al.. (2008). [Source of variation in the diagnosis of Helicobacter pylori-associated multifocal atrophic gastritis.]. PubMed. 39(1). 58–65. 4 indexed citations

Corréa, P, Elizabeth T. H. Fontham, Juan Carlos Bravo, et al.. (2001). RESPONSE: Re: Chemoprevention of Gastric Dysplasia: Randomized Trial of Antioxidant Supplements and Anti-Helicobacter pylori Therapy. JNCI Journal of the National Cancer Institute. 93(7). 559–560. 10 indexed citations

Corréa, P, G T Malcom, Elizabeth T. H. Fontham, et al.. (1998). Antioxidant micronutrients and gastric cancer. Alimentary Pharmacology & Therapeutics. 12(s1). 73–82. 66 indexed citations

Mannick, E. E., Luis Eduardo Bravo, Guillermo Zarama, et al.. (1996). Inducible nitric oxide synthase, nitrotyrosine, and apoptosis in Helicobacter pylori gastritis: effect of antibiotics and antioxidants.. PubMed. 56(14). 3238–43. 422 indexed citations breakdown →

Correa, Pelayo, James G. Fox, Elizabeth Fontham, et al.. (1990). Helicobacter pylori and gastric carcinoma: Serum antibody prevalence in populations with contrasting cancer risks. Cancer. 66(12). 2569–2574. 318 indexed citations

Correa, Pelayo, William Haenszel, Carlos Cuello, et al.. (1990). Gastric precancerous process in a high risk population: cross-sectional studies.. PubMed. 50(15). 4731–6. 143 indexed citations

Correa, Pelayo, William Haenszel, C Cuello, et al.. (1990). Gastric precancerous process in a high risk population: cohort follow-up.. PubMed. 50(15). 4737–40. 301 indexed citations

10.

Bonney, George E., Robert C. Elston, Pelayo Correa, et al.. (1987). Genetic etiology of gastric carcinoma: II. Segregation analysis of gastric pH, nitrate, and nitrite. Genetic Epidemiology. 4(2). 103–114. 8 indexed citations

11.

Bonney, George E., Robert C. Elston, Pelayo Correa, et al.. (1986). Genetic etiology of gastric carcinoma: I. Chronic atrophic gastritis. Genetic Epidemiology. 3(4). 213–224. 38 indexed citations

12.

Lipkin, Mack, P Corréa, Yves B. Mikol, et al.. (1985). Proliferative and Antigenic Modifications in Human Epithelial Cells in Chronic Atrophic Gastritis<xref ref-type="fn" rid="FN1">2</xref>. JNCI Journal of the National Cancer Institute. 75(4). 613–9. 41 indexed citations

13.

Haenszel, William, Pelayo Correa, Carlos Cuello, et al.. (1985). Serum micronutrient levels in relation to gastric pathology. International Journal of Cancer. 36(1). 43–48. 44 indexed citations

14.

Haenszel, William, et al.. (1985). Correlations of values of micronutrients in sera with gastric pathology.. PubMed. 69. 115–9. 3 indexed citations

15.

Montes, Guillermo, Carlos Cuello, Pelayo Correa, et al.. (1985). Mutagenic activity of nitrosated foods in an area with a high risk for stomach cancer. Nutrition and Cancer. 6(3). 171–175. 6 indexed citations

16.

Montes, Guillermo, et al.. (1985). Sodium intake and gastric cancer. Journal of Cancer Research and Clinical Oncology. 109(1). 42–45. 20 indexed citations

17.

Corréa, P, Guillermo Montes, C Cuello, et al.. (1985). Urinary sodium-to-creatinine ratio as an indicator of gastric cancer risk.. PubMed. 69. 121–3. 8 indexed citations

18.

Corréa, P, C Cuello, Guido Gordillo, et al.. (1979). The gastric microenvironment in populations at high risk to stomach cancer.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 167–70. 18 indexed citations

19.

Correa, Pelayo, et al.. (1979). Histopathology of gastric dysplasias Correlations with gastric juice chemistry. The American Journal of Surgical Pathology. 3(6). 491–500. 61 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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