O Ramgren

486 total citations
22 papers, 392 citations indexed

About

O Ramgren is a scholar working on Hematology, Biotechnology and Genetics. According to data from OpenAlex, O Ramgren has authored 22 papers receiving a total of 392 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Hematology, 6 papers in Biotechnology and 3 papers in Genetics. Recurrent topics in O Ramgren's work include Hemophilia Treatment and Research (9 papers), Enzyme Production and Characterization (6 papers) and Hemostasis and retained surgical items (3 papers). O Ramgren is often cited by papers focused on Hemophilia Treatment and Research (9 papers), Enzyme Production and Characterization (6 papers) and Hemostasis and retained surgical items (3 papers). O Ramgren collaborates with scholars based in Sweden, Nigeria and Denmark. O Ramgren's co-authors include Margareta Blombäck, Inga Marie Nilsson, Jan Hirschfeld, Erik Jorpes, Rolf Lundström, Peter‐Paul A. Unger, Birger Blombäck, Claes Thorén, Birgitta Norberg and I M Nilsson and has published in prestigious journals such as Nature, The Lancet and Acta Paediatrica.

In The Last Decade

O Ramgren

21 papers receiving 350 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
O Ramgren Sweden 10 316 79 53 44 23 22 392
Z. T. Maung United Kingdom 9 140 0.4× 52 0.7× 5 0.1× 145 3.3× 20 0.9× 13 318
G. Zeile Germany 5 366 1.2× 73 0.9× 7 0.1× 105 2.4× 9 0.4× 6 410
PI Terasaki United States 7 80 0.3× 37 0.5× 4 0.1× 37 0.8× 7 0.3× 12 250
Maria Antonietta Villa Italy 9 189 0.6× 61 0.8× 2 0.0× 19 0.4× 11 0.5× 19 245
J Aprile United States 7 94 0.3× 19 0.2× 3 0.1× 18 0.4× 15 0.7× 12 209
G. Michlmayr Austria 6 41 0.1× 23 0.3× 3 0.1× 26 0.6× 10 0.4× 15 132
Astrid Haack Germany 4 314 1.0× 76 1.0× 2 0.0× 80 1.8× 4 0.2× 5 369
Yael Gelfand Israel 11 193 0.6× 20 0.3× 11 0.2× 34 0.8× 11 0.5× 18 345
Gordon Em United States 4 278 0.9× 73 0.9× 1 0.0× 66 1.5× 8 0.3× 5 335
Phyllis Warkentin United States 6 72 0.2× 18 0.2× 12 0.2× 42 1.0× 9 0.4× 7 219

Countries citing papers authored by O Ramgren

Since Specialization
Citations

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

Fields of papers citing papers by O Ramgren

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of O Ramgren

This figure shows the co-authorship network connecting the top 25 collaborators of O Ramgren. A scholar is included among the top collaborators of O Ramgren 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 O Ramgren. O Ramgren 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.
Nilsson, I M, et al.. (2015). Investigations on Hemophilia A and B Carriers. Current studies in hematology and blood transfusion. 26. 22–29.
2.
Unger, Peter‐Paul A. & O Ramgren. (2015). Automated Analysis in Blood-Group Serology and Haematology. Proceedings of the International Society of Blood Transfusion. 23. 959–963. 1 indexed citations
3.
Ramgren, O, et al.. (1970). Computer System for Blood Transfusion Service. Transfusion. 10(3). 121–132. 19 indexed citations
4.
Ramgren, O. (1967). Investigation of suspected transfusion hepatitis with automatic data processing, ADP, techniques.. PubMed. 100. 23–23. 1 indexed citations
5.
Hirschfeld, Jan, et al.. (1966). A New Anti-Ag Serum (Serum B.N.). Nature. 212(5058). 206–207. 11 indexed citations
6.
Unger, Peter‐Paul A., et al.. (1964). A Centrifuge for Separation and Collection of Fractions in Separate Containers Under Sterile Conditions. Nature. 201(4914). 32–35. 1 indexed citations
7.
Lundström, Rolf, et al.. (1963). Immune Globulin against Tetanus. Acta Paediatrica. 52(S140). 100–102. 3 indexed citations
8.
Nilsson, Inga Marie, Margareta Blombäck, Birger Blombäck, & O Ramgren. (1962). The use of human AHF (fraction I-0) in haemophilia A. Annals of Hematology. 8(2). 92–101. 9 indexed citations
9.
Nilsson, Inga Marie, et al.. (1962). Haemophilia in Sweden. Acta Medica Scandinavica. 171(2). 223–235. 39 indexed citations
10.
Jorpes, Erik & O Ramgren. (1962). The Haemophilia Situation in Sweden. Acta Medica Scandinavica. 171(S379). 23–33. 7 indexed citations
11.
Ramgren, O. (1962). A CLINICAL AND MEDICO‐SOCIAL STUDY OF HAEMOPHILIA IN SWEDEN. Acta Medica Scandinavica. 171(S379). 111–190. 48 indexed citations
12.
Ramgren, O. (1962). HAEMOPHILIA IN SWEDEN. Acta Medica Scandinavica. 171(S379). 37–60. 18 indexed citations
13.
Ramgren, O. (1962). Haemophilia in Sweden. Acta Medica Scandinavica. 171(2). 237–242. 80 indexed citations
14.
Ramgren, O, Inga Marie Nilsson, & Margareta Blombäck. (1962). Haemophilia in Sweden. Acta Medica Scandinavica. 171(6). 759–769. 13 indexed citations
15.
Nilsson, Inga Marie, Margareta Blombäck, & O Ramgren. (1961). Haemophilia in Sweden. Acta Medica Scandinavica. 170(6). 665–682. 96 indexed citations
16.
Ramgren, O, et al.. (1960). Hemophilic Arthropathy. Scandinavian Journal of Rheumatology. 6(1). 135–143. 6 indexed citations
17.
Ramgren, O, et al.. (1958). Immediate, Non‐Haemolytic Reactions to Blood Transfusion. Acta Medica Scandinavica. 162(3). 211–223. 1 indexed citations
18.
Lundström, Rolf & O Ramgren. (1958). Plasmapheresis in the Preparation of Hyperimmune Serum. Scandinavian Journal of Clinical and Laboratory Investigation. 10(2). 119–121. 2 indexed citations
19.
Norberg, Birgitta & O Ramgren. (1956). [Hemoglobin, serum iron, and serum protein values in blood donors; effect of repeated blood donations on healthy persons].. PubMed. 56(46). 1649–53. 1 indexed citations
20.
Ramgren, O. (1954). HIGH ISOHÆMAGGLUTININ TITRE IN BLOOD-GROUPS A AND B. The Lancet. 263(6815). 782–782. 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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