R.W. McCallum

2.1k total citations
34 papers, 1.6k citations indexed

About

R.W. McCallum is a scholar working on Gastroenterology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, R.W. McCallum has authored 34 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Gastroenterology, 12 papers in Surgery and 5 papers in Pulmonary and Respiratory Medicine. Recurrent topics in R.W. McCallum's work include Gastrointestinal motility and disorders (18 papers), Gastroesophageal reflux and treatments (9 papers) and Eosinophilic Esophagitis (4 papers). R.W. McCallum is often cited by papers focused on Gastrointestinal motility and disorders (18 papers), Gastroesophageal reflux and treatments (9 papers) and Eosinophilic Esophagitis (4 papers). R.W. McCallum collaborates with scholars based in United States, Australia and Hong Kong. R.W. McCallum's co-authors include Bruce D. Schirmer, Leah J. Barrett, Richard L. Guerrant, Barry J. Marshall, Chandra Prakash, Robert D. Richards, R. K. Mittal, Deborah M. Campoli-Richards, Karen L. Goa and Michał Majewski and has published in prestigious journals such as Gastroenterology, Journal of Pharmacology and Experimental Therapeutics and The American Journal of Gastroenterology.

In The Last Decade

R.W. McCallum

32 papers receiving 1.6k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
R.W. McCallum United States	16	925	766	282	205	162	34	1.6k
J.‐R. Malagelada Spain	27	1.4k 1.5×	988 1.3×	525 1.9×	153 0.7×	209 1.3×	68	2.4k
M. Bortolotti Italy	27	1.6k 1.7×	1.4k 1.8×	340 1.2×	249 1.2×	73 0.5×	85	2.5k
Tobias Liebregts Germany	24	1.5k 1.6×	760 1.0×	500 1.8×	147 0.7×	298 1.8×	64	2.5k
Peter L. Moses United States	17	699 0.8×	525 0.7×	319 1.1×	170 0.8×	287 1.8×	48	1.5k
Kei Matsueda Japan	18	1.1k 1.2×	780 1.0×	365 1.3×	60 0.3×	197 1.2×	52	1.9k
J. Janssens Netherlands	16	509 0.6×	489 0.6×	193 0.7×	164 0.8×	63 0.4×	50	1.4k
Ho Soon Choi South Korea	25	719 0.8×	965 1.3×	233 0.8×	429 2.1×	269 1.7×	125	2.0k
Ning Dai China	30	1.2k 1.3×	995 1.3×	426 1.5×	270 1.3×	487 3.0×	90	2.5k
Oh Young Lee South Korea	27	1.3k 1.4×	1.1k 1.5×	387 1.4×	342 1.7×	382 2.4×	138	2.5k
Rosanna Cogliandro Italy	22	1.3k 1.4×	1.1k 1.4×	355 1.3×	112 0.5×	175 1.1×	58	2.0k

Countries citing papers authored by R.W. McCallum

Since Specialization

Citations

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

Fields of papers citing papers by R.W. McCallum

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R.W. McCallum. 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 R.W. McCallum. The network helps show where R.W. McCallum may publish in the future.

Co-authorship network of co-authors of R.W. McCallum

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

All Works

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20 of 20 papers shown

Sarosiek, Irene, Mohammad Bashashati, Brian R. Davis, et al.. (2025). Combined Gastric Electrical Stimulation and Pyloroplasty in Gastroparesis. JAMA Network Open. 8(12). e2546332–e2546332.

Hejazi, Reza, Teri Lavenbarg, & R.W. McCallum. (2010). Spectrum of gastric emptying patterns in adult patients with cyclic vomiting syndrome. Neurogastroenterology & Motility. 22(12). 1298–e338. 47 indexed citations

Sarosiek, Irene, Jerzy Sarosiek, Sriganesh Ramachandra Rao, et al.. (2007). Comparisons of Alimentary Tract Transit Times among Normal Subjects from Two Multicenter Trials Using SmartPill Wireless pH/Pressure Recording Capsule: Its Clinical Implication. The American Journal of Gastroenterology. 102. S170–S170. 2 indexed citations

Majewski, Michał & R.W. McCallum. (2007). Results of small intestinal bacterial overgrowth testing in irritable bowel syndrome patients: clinical profiles and effects of antibiotic trial.. PubMed. 52. 139–42. 87 indexed citations

Liu, Wenhong, Tianshuang Qiu, Zhenghong Lin, & R.W. McCallum. (2005). Estimation of Propagation Velocity of Gastric Electrical Activity Using LMSTDE. PubMed. 111. 5954–5957. 3 indexed citations

Kendall, Bradley J., et al.. (1997). Cisapride in the Long-Term Treatment of Chronic Gastroparesis: A 2-Year Open-Label Study. Journal of International Medical Research. 25(4). 182–189. 14 indexed citations

Weber, Frank, et al.. (1997). Misoprostol in the treatment of chronic refractory constipation: results of a long‐term open label trial. Alimentary Pharmacology & Therapeutics. 11(6). 1059–1066. 55 indexed citations

Soykan, İrfan, et al.. (1997). A new nausea model in humans produces mild nausea without electrogastrogram and vasopressin changes. Neurogastroenterology & Motility. 9(4). 257–263. 14 indexed citations

McCallum, R.W.. (1996). Motility Agents and the Gastrointestinal Tract. The American Journal of the Medical Sciences. 312(1). 19–26. 13 indexed citations

10.

Hotokezaka, Masayuki, Reid B. Adams, A. Dusty Miller, R.W. McCallum, & Bruce D. Schirmer. (1996). Laparoscopic percutaneous jejunostomy for long term enteral access. Surgical Endoscopy. 10(10). 1008–1011. 34 indexed citations

11.

Chen, J., R.W. McCallum, & Robert D. Richards. (1993). Frequency components of the electrogastrogram and their correlations with gastrointestinal contractions in humans. Medical & Biological Engineering & Computing. 31(1). 60–67. 58 indexed citations

12.

Weber, Frederick, Robert D. Richards, & R.W. McCallum. (1993). Erythromycin: a motilin agonist and gastrointestinal prokinetic agent.. PubMed. 88(4). 485–90. 107 indexed citations

13.

McCallum, R.W., et al.. (1991). Subcutaneous metoclopramide in the treatment of symptomatic gastroparesis: clinical efficacy and pharmacokinetics.. Journal of Pharmacology and Experimental Therapeutics. 258(1). 136–142. 47 indexed citations

14.

Stubbs, James B., et al.. (1991). A noninvasive scintigraphic assessment of the colonic transit of nondigestible solids in man.. PubMed. 32(7). 1375–81. 26 indexed citations

15.

Marshall, Barry J., Leah J. Barrett, Chandra Prakash, R.W. McCallum, & Richard L. Guerrant. (1990). Urea protects Helicobacter (Campylobacter) pylori from the bactericidal effect of acid. Gastroenterology. 99(3). 697–702. 299 indexed citations

16.

McCallum, R.W., et al.. (1990). Erythromycin enhances the gastric slow wave in gastroparetic patients. Gastroenterology. 99(4). 1207–1207. 5 indexed citations

17.

McCallum, R.W., et al.. (1988). Cisapride. Drugs. 36(6). 652–681. 183 indexed citations

18.

Prokop, Edward K., et al.. (1988). Scintigraphic determination of the effect of metoclopramide and morphine on small intestinal transit time.. PubMed. 3(4). 201–4. 6 indexed citations

19.

Caride, Vicente J., et al.. (1984). Scintigraphic Determination of Small Intestinal Transit Time: Comparison With the Hydrogen Breath Technique. Gastroenterology. 86(4). 714–720. 100 indexed citations

20.

McCallum, R.W., et al.. (1979). Effect of endogenous hyperprolactinemia on human lower esophagel sphincter pressure.. PubMed. 71(3). 259–63. 2 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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