Ragnar Källén

37 total papers · 2.0k total citations
32 papers, 1.6k citations indexed

About

Ragnar Källén is a scholar working on Surgery, Transplantation and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Ragnar Källén has authored 32 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Surgery, 11 papers in Transplantation and 6 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Ragnar Källén’s work include Pancreatic function and diabetes (15 papers), Organ Transplantation Techniques and Outcomes (11 papers) and Renal Transplantation Outcomes and Treatments (11 papers). Ragnar Källén is often cited by papers focused on Pancreatic function and diabetes (15 papers), Organ Transplantation Techniques and Outcomes (11 papers) and Renal Transplantation Outcomes and Treatments (11 papers). Ragnar Källén collaborates with scholars based in Sweden, Norway and Denmark. Ragnar Källén's co-authors include Annika Tibell, Olle Korsgren, Gunnar Tufveson, K. Salmela, Bo Nilsson, Marie Felldin, Christian Berne, Aksel Foss, Lisa Moberg and Kristina Nilsson Ekdahl and has published in prestigious journals such as The Lancet, Diabetes and Transplantation.

In The Last Decade

Co-authorship network of co-authors of Ragnar Källén

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

Ragnar Källén

31 papers receiving 1.5k citations

Fields of papers citing papers by Ragnar Källén

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Ragnar Källén

Since Specialization
Citations

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

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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2026