A. Walan

4.3k total citations
107 papers, 3.3k citations indexed

About

A. Walan is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, A. Walan has authored 107 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 58 papers in Surgery, 46 papers in Gastroenterology and 14 papers in Pulmonary and Respiratory Medicine. Recurrent topics in A. Walan's work include Helicobacter pylori-related gastroenterology studies (50 papers), Gastroesophageal reflux and treatments (35 papers) and Eosinophilic Esophagitis (16 papers). A. Walan is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (50 papers), Gastroesophageal reflux and treatments (35 papers) and Eosinophilic Esophagitis (16 papers). A. Walan collaborates with scholars based in Sweden, Norway and Canada. A. Walan's co-authors include G. Bodemar, G. Dotevall, B. Norlander, J. Næsdal, Elly C. Klinkenberg–Knol, Niilo Havu, P. Snel, R. Gotthard, Claes Hallert and S. Eriksson and has published in prestigious journals such as New England Journal of Medicine, The Lancet and SHILAP Revista de lepidopterología.

In The Last Decade

A. Walan

101 papers receiving 2.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
A. Walan Sweden 28 2.2k 1.8k 612 400 353 107 3.3k
R P Walt United Kingdom 26 1.5k 0.7× 1.2k 0.6× 476 0.8× 235 0.6× 258 0.7× 65 2.3k
James W. Freston United States 30 1.1k 0.5× 698 0.4× 376 0.6× 336 0.8× 173 0.5× 86 2.4k
M. G. Korman Australia 38 2.2k 1.0× 1.3k 0.7× 566 0.9× 1.2k 3.1× 188 0.5× 111 4.6k
Sven Gustavsson Sweden 31 2.2k 1.0× 1.1k 0.6× 580 0.9× 183 0.5× 95 0.3× 132 3.0k
Gerard P. van Berge-Henegouwen Netherlands 28 1.4k 0.6× 960 0.5× 469 0.8× 389 1.0× 87 0.2× 54 2.5k
Thomas Simon United States 23 1.3k 0.6× 482 0.3× 277 0.5× 145 0.4× 1.3k 3.7× 46 2.7k
M. Lazzaroni Italy 21 966 0.4× 567 0.3× 313 0.5× 138 0.3× 225 0.6× 78 1.5k
A J Swannell United Kingdom 18 1.2k 0.5× 544 0.3× 258 0.4× 161 0.4× 1.2k 3.4× 35 2.5k
Wolfgang Rösch Germany 32 1.7k 0.8× 480 0.3× 597 1.0× 418 1.0× 50 0.1× 203 3.2k
G Sigthorsson United Kingdom 17 951 0.4× 385 0.2× 147 0.2× 753 1.9× 620 1.8× 29 2.4k

Countries citing papers authored by A. Walan

Since Specialization
Citations

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

Fields of papers citing papers by A. Walan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. Walan

This figure shows the co-authorship network connecting the top 25 collaborators of A. Walan. A scholar is included among the top collaborators of A. Walan 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 A. Walan. A. Walan 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.
Lundell, Lars, Niilo Havu, Pekka Miettinen, et al.. (2006). Changes of gastric mucosal architecture during long‐term omeprazole therapy: results of a randomized clinical trial. Alimentary Pharmacology & Therapeutics. 23(5). 639–647. 71 indexed citations
2.
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Nelis, G.F., Elly C. Klinkenberg–Knol, P. Snel, et al.. (2001). Helicobacter pylori eradication for the prevention of atrophic gastritis during omeprazole therapy; A prospective randomized trial. Gastroenterology. 120(5). A14–A14. 6 indexed citations
5.
Klinkenberg–Knol, Elly C., Frits Nelis, John Dent, et al.. (2000). Long-term omeprazole treatment in resistant gastroesophageal reflux disease: Efficacy, safety, and influence on gastric mucosa. Gastroenterology. 118(4). 661–669. 402 indexed citations
6.
Moayyedi, Paul, Robert Peacock, A. Walan, et al.. (2000). Changing Patterns of Helicobacter pylori Gastritis in Long‐Standing Acid Suppression. Helicobacter. 5(4). 206–214. 86 indexed citations
7.
Hawkey, CJ, et al.. (1998). Influence of sex and Helicobacter pylori on type and location of lesions in NSAID-users. Gastroenterology. 114. A145–A145. 1 indexed citations
8.
McCloy, R F, R. Arnold, K. D. Bardhan, et al.. (1995). Pathophysiological effects of long-term acid suppression in man. Digestive Diseases and Sciences. 40(S2). 96S–120S. 47 indexed citations
9.
Walan, A. & S. Eriksson. (1994). Long-Term Consequences with Regard to Clinical Outcome and Cost-Effectiveness of Episodic Treatment with Omeprazole or Ranitidine for Healing of Duodenal Ulcer. Scandinavian Journal of Gastroenterology. 29(sup201). 91–97. 8 indexed citations
10.
Lundborg, Per, et al.. (1992). Safety Experience from Long-Term Treatment with Omeprazole. Digestion. 51(1). 93–101. 41 indexed citations
11.
Næsdal, J., et al.. (1990). Intravenous omeprazole: effect of a loading dose on 24‐h intragastric pH. Alimentary Pharmacology & Therapeutics. 4(1). 65–72. 39 indexed citations
12.
Walan, A.. (1990). Clinical Development Programme for Omeprazole. Digestion. 47(1). 54–58. 1 indexed citations
13.
Walan, A., John P. Bader, M. Claßen, et al.. (1989). Effect of Omeprazole and Ranitidine on Ulcer Healing and Relapse Rates in Patients with Benign Gastric Ulcer. New England Journal of Medicine. 320(2). 69–75. 294 indexed citations
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Bodemar, G., et al.. (1986). Variation of Disaccharidase Activities in Duodenal Biopsy Specimens. Scandinavian Journal of Gastroenterology. 21(1). 51–54. 18 indexed citations
16.
Bodemar, G., et al.. (1983). Measurements of di saccharidases originating from the duodenal bulb are they really of any value. Scandinavian Journal of Gastroenterology. 18(86). 34. 1 indexed citations
17.
Hallert, Claes, R. Gotthard, Gunnar Jansson, Klas Norrby, & A. Walan. (1983). Similar prevalence of coeliac disease in children and middle-aged adults in a district of Sweden.. Gut. 24(5). 389–391. 25 indexed citations
18.
Bodemar, G., et al.. (1982). The pharmacokinetics of cimetidine and its sulphoxide metabolite in patients with normal and impaired renal function.. British Journal of Clinical Pharmacology. 13(2). 163–170. 25 indexed citations
19.
Frödin, Thomas, R. Gotthard, J. Hed, et al.. (1981). Gluten-free diet for dermatitis herpetiformis: the long-term effect on cutaneous, immunological and jejunal manifestations. Acta Dermato Venereologica. 61(5). 405–411. 32 indexed citations
20.
Walan, A.. (1979). Anticholinergics in the treatment of peptic ulcer.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 55. 84–95. 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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