Ragnar Källén

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), Renal Transplantation Outcomes and Treatments (11 papers) and Organ Transplantation Techniques and Outcomes (11 papers). Ragnar Källén is often cited by papers focused on Pancreatic function and diabetes (15 papers), Renal Transplantation Outcomes and Treatments (11 papers) and Organ Transplantation Techniques and Outcomes (11 papers). Ragnar Källén collaborates with scholars based in Sweden, Norway and Denmark. Ragnar Källén's co-authors include Olle Korsgren, Gunnar Tufveson, Annika Tibell, K. Salmela, Bo Nilsson, Marie Felldin, Christian Berne, Aksel Foss, Lisa Moberg and Torbjörn Lundgren and has published in prestigious journals such as The Lancet, Diabetes and Transplantation.

In The Last Decade

Ragnar Källén

31 papers receiving 1.5k citations

Peers

Ragnar Källén
Torbjörn Lundgren Sweden
Stefan Ludwig Germany
Takaharu Nagasaka Japan
H.Z. Ke United States
S Todo United States
Brown Dm United States
Della Cole United Kingdom
K Hamaguchi Japan
Hisafumi Yasuda Japan
Peter Chase United States
Torbjörn Lundgren Sweden
Ragnar Källén
Citations per year, relative to Ragnar Källén Ragnar Källén (= 1×) peers Torbjörn Lundgren

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).

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.

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.

All Works

20 of 20 papers shown
1.
Ekberg, Jana, Seema Baid‐Agrawal, Bente Jespersen, et al.. (2021). A Randomized Controlled Trial on Safety of Steroid Avoidance in Immunologically Low-Risk Kidney Transplant Recipients. Kidney International Reports. 7(2). 259–269. 8 indexed citations
2.
3.
Persson, Nils H., et al.. (2006). Low incidence of brain death and organ donation in Sweden. Analyses of a six-year prospective registration of all deceased patients in intensive units in Southern Sweden. Lund University Publications (Lund University). 2 indexed citations
4.
Goto, Masafumi, Ulrika Johansson, Marie Felldin, et al.. (2005). Key Factors for Human Islet Isolation and Clinical Transplantation. Transplantation Proceedings. 37(2). 1315–1316. 20 indexed citations
5.
Johansson, H, Agneta Lukinius, Lisa Moberg, et al.. (2005). Tissue Factor Produced by the Endocrine Cells of the Islets of Langerhans Is Associated With a Negative Outcome of Clinical Islet Transplantation. Diabetes. 54(6). 1755–1762. 267 indexed citations
6.
Korsgren, Olle, Bo Nilsson, Christian Berne, et al.. (2005). Current Status of Clinical Islet Transplantation. Transplantation. 79(10). 1289–1293. 109 indexed citations
7.
Moberg, Lisa, Annika Olsson, Christian Berne, et al.. (2003). Nicotinamide inhibits tissue factor expression in isolated human pancreatic islets: implications for clinical islet transplantation1. Transplantation. 76(9). 1285–1288. 105 indexed citations
8.
9.
Moberg, Lisa, H Johansson, Agneta Lukinius, et al.. (2002). Production of tissue factor by pancreatic islet cells as a trigger of detrimental thrombotic reactions in clinical islet transplantation. The Lancet. 360(9350). 2039–2045. 453 indexed citations
10.
Persson, Nils H., et al.. (2001). Renal transplantation from marginal donors: results and allocation strategies. Transplantation Proceedings. 33(7-8). 3759–3761. 7 indexed citations
11.
Jönsson, Per, Ragnar Källén, Agneta Montgomery, & Anders Borgström. (1995). Protease Activation in the Porcine Pancreatic Allograft During Preservation. Pancreas. 11(3). 256–260. 5 indexed citations
12.
Montgomery, Agneta, Ragnar Källén, K Fält, U Haglund, & Anders Borgström. (1993). Reperfusion of Duodenum and Pancreas Following 24 hr of Cold Storage in Perfadex or UW Solution. Journal of Surgical Research. 55(6). 615–621. 4 indexed citations
13.
Montgomery, Agneta, Ragnar Källén, Anders Borgström, & U Haglund. (1992). DUODENAL MUCOSAL pH AS A REPERFUSION INDICATOR IN PANCREATIC-DUODENAL TRANSPLANTATION IN THE PIG. Transplantation. 53(2). 312–315. 6 indexed citations
14.
Källén, Ragnar, et al.. (1992). Protease activation following reperfusion of porcine pancreatic allografts. Journal of Surgical Research. 53(5). 495–501. 4 indexed citations
15.
16.
Källén, Ragnar & Anders Borgström. (1991). BIOCHEMICAL CHARACTERIZATION OF REPERFUSION PANCREATITIS IN PORCINE PANCREATIC ALLOGRAFTS AFTER SIX HOURS OF COLD STORAGE. Transplantation. 51(4). 754–758. 10 indexed citations
17.
Källén, Ragnar, et al.. (1990). URINARY INSULIN LEVEL AS AN INDICATOR OF GRAFT FUNCTION AFTER PORCINE PANCREATIC TRANSPLANTATION. Transplantation. 49(6). 1036–1038.
18.
Källén, Ragnar, Anders Borgström, & K Fält. (1989). PANCREATIC ENZYMES IN SERUM AND URINE AS INDICATORS OF PANCREATIC ALLOGRAFT REJECTION IN THE PIG. Transplantation. 48(3). 376–380. 10 indexed citations
19.
Eriksson, S., et al.. (1987). Tranexamic Acid in Gastric and Duodenal Bleeding. Scandinavian Journal of Gastroenterology. 22(sup137). 71–74. 13 indexed citations
20.
Källén, Ragnar, H. Graffner, & Jönsson Pe. (1986). Jejunogastric intussusception through the enteroanastomosis after gastric resection. Case report.. PubMed. 152. 637–40. 4 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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