Nikolas Ruffer

604 total citations
36 papers, 330 citations indexed

About

Nikolas Ruffer is a scholar working on Pulmonary and Respiratory Medicine, Rheumatology and Immunology. According to data from OpenAlex, Nikolas Ruffer has authored 36 papers receiving a total of 330 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Pulmonary and Respiratory Medicine, 11 papers in Rheumatology and 7 papers in Immunology. Recurrent topics in Nikolas Ruffer's work include Vasculitis and related conditions (12 papers), Otitis Media and Relapsing Polychondritis (5 papers) and Immunodeficiency and Autoimmune Disorders (4 papers). Nikolas Ruffer is often cited by papers focused on Vasculitis and related conditions (12 papers), Otitis Media and Relapsing Polychondritis (5 papers) and Immunodeficiency and Autoimmune Disorders (4 papers). Nikolas Ruffer collaborates with scholars based in Germany, Switzerland and Austria. Nikolas Ruffer's co-authors include Martin Krusche, Ina Kötter, Johannes Knitza, Johanna Callhoff, Tobias B. Huber, Gerd R Burmester, Anne Pankow, Lennard Ostendorf, Tim Rolvien and Udo Schneider and has published in prestigious journals such as Annals of the Rheumatic Diseases, Lara D. Veeken and Seminars in Arthritis and Rheumatism.

In The Last Decade

Nikolas Ruffer

29 papers receiving 322 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nikolas Ruffer Germany 11 154 63 60 50 39 36 330
Carrie Ye Canada 10 23 0.1× 47 0.7× 56 0.9× 43 0.9× 13 0.3× 45 393
Meghan Berkenstock United States 11 59 0.4× 20 0.3× 43 0.7× 26 0.5× 14 0.4× 64 294
Peter Bartz‐Bazzanella Germany 9 183 1.2× 37 0.6× 13 0.2× 71 1.4× 9 0.2× 23 388
M. Akbarian Iran 10 157 1.0× 10 0.2× 79 1.3× 19 0.4× 8 0.2× 45 341
Faiq Shaikh United States 11 18 0.1× 23 0.4× 63 1.1× 28 0.6× 33 0.8× 32 337
Esther Toledano Spain 10 185 1.2× 14 0.2× 23 0.4× 29 0.6× 3 0.1× 26 309
Maurits C. F. J. de Rotte Netherlands 10 230 1.5× 83 1.3× 14 0.2× 21 0.4× 4 0.1× 15 393
Ebru Damadoğlu Türkiye 8 28 0.2× 19 0.3× 69 1.1× 10 0.2× 26 0.7× 53 267
Fabiana Tezza Italy 11 73 0.5× 206 3.3× 53 0.9× 28 0.6× 5 0.1× 21 476
Keiichi Matsuzaki Japan 12 68 0.4× 37 0.6× 87 1.4× 27 0.5× 3 0.1× 33 787

Countries citing papers authored by Nikolas Ruffer

Since Specialization
Citations

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

Fields of papers citing papers by Nikolas Ruffer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nikolas Ruffer

This figure shows the co-authorship network connecting the top 25 collaborators of Nikolas Ruffer. A scholar is included among the top collaborators of Nikolas Ruffer 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 Nikolas Ruffer. Nikolas Ruffer 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.
Haase, Isabell, Boris Fehse, Nikolas Ruffer, et al.. (2025). A novel approach to refractory idiopathic inflammatory myopathy: CD19 CAR T-cell therapy—case report and literature review. Lara D. Veeken. 64(9). 5101–5107. 1 indexed citations
2.
Ruffer, Nikolas, Felix Kleefeld, Martin Krusche, et al.. (2024). Vaskulitische Beteiligung der Skelettmuskulatur und des peripheren Nervensystems: Klinische und neuropathologische Perspektive. Zeitschrift für Rheumatologie. 84(3). 210–218.
3.
Ruffer, Nikolas, Hans-Hilmar Goebel, Denis Poddubnyy, et al.. (2024). Inflammation of the temporalis muscle and adjacent nerve tissue in giant cell arteritis: expanding the spectrum of inflammatory lesions. Lara D. Veeken. 64(6). 3884–3888. 2 indexed citations
4.
Ruffer, Nikolas, et al.. (2023). Daratumumab for autoimmune diseases: a systematic review. RMD Open. 9(4). e003604–e003604. 26 indexed citations
5.
Krusche, Martin, Johanna Callhoff, Johannes Knitza, & Nikolas Ruffer. (2023). Diagnostic accuracy of a large language model in rheumatology: comparison of physician and ChatGPT-4. Rheumatology International. 44(2). 303–306. 60 indexed citations
6.
Ruffer, Nikolas, Martin Krusche, Werner Stenzel, & Udo Schneider. (2023). Comment on: Rescue therapy of antisynthetase syndrome with CD19-targeted CAR-T cells after failure of several B-cell depleting antibodies. Lara D. Veeken. 63(11). e309–e311. 3 indexed citations
7.
Ruffer, Nikolas & Martin Krusche. (2023). VEXAS syndrome: a diagnostic puzzle. RMD Open. 9(3). e003332–e003332. 10 indexed citations
8.
Ruffer, Nikolas, et al.. (2023). Hughes-Stovin-Syndrom: eine lebensbedrohliche Manifestation des Behçet-Syndroms. Zeitschrift für Rheumatologie. 83(4). 327–333.
9.
10.
Kernder, Anna, Kirsten de Groot, Bernhard Hellmich, et al.. (2023). COVID-19 pandemic impairs medical care of vasculitis patients in Germany: Results of a national patient survey. Frontiers in Medicine. 9. 1103694–1103694. 2 indexed citations
11.
Ruffer, Nikolas, et al.. (2022). Kokain-induzierte Vaskulitiden und Vaskulitis-Mimics. Zeitschrift für Rheumatologie. 82(7). 606–614. 1 indexed citations
12.
Ruffer, Nikolas, et al.. (2022). Papulonodular tattoo lesions as a clinical sign of systemic sarcoidosis. Clinical Rheumatology. 41(8). 2589–2590.
13.
Ruffer, Nikolas, et al.. (2022). Secondary immune-mediated thrombotic thrombocytopenic purpura in idiopathic inflammatory myopathy: a case-based review. Rheumatology International. 43(3). 551–557.
14.
Ruffer, Nikolas, Martin Krusche, Frank Timo Beil, et al.. (2022). Clinical features of methotrexate osteopathy in rheumatic musculoskeletal disease: A systematic review. Seminars in Arthritis and Rheumatism. 52. 151952–151952. 18 indexed citations
15.
Ruffer, Nikolas, Nicola M. Tomas, Stefan Schmiedel, Sabine Jordan, & Ina Kötter. (2021). Imitation eines Felty-Syndroms durch eine viszerale Leishmaniasis bei rheumatoider Arthritis unter Therapie mit Methotrexat und Etanercept. Zeitschrift für Rheumatologie. 81(3). 240–243. 1 indexed citations
16.
Ruffer, Nikolas, et al.. (2021). Differenzialdiagnose eines vaskulitischen Syndroms der unteren Extremität. Zeitschrift für Rheumatologie. 81(10). 871–880. 1 indexed citations
17.
Ruffer, Nikolas, Johannes Knitza, & Martin Krusche. (2020). #Covid4Rheum: an analytical twitter study in the time of the COVID-19 pandemic. Rheumatology International. 40(12). 2031–2037. 17 indexed citations
18.
Krusche, Martin, et al.. (2020). Apps und ihre Anwendungsgebiete in der Rheumatologie. Zeitschrift für Rheumatologie. 79(6). 554–561. 6 indexed citations
19.
Krusche, Martin, et al.. (2019). Cocaine-induced ANCA-associated renal disease: a case-based review. Rheumatology International. 39(11). 2005–2014. 15 indexed citations
20.
Krusche, Martin, Nikolas Ruffer, & Ina Kötter. (2018). Tocilizumab treatment in refractory polyarteritis nodosa: a case report and review of the literature. Rheumatology International. 39(2). 337–344. 17 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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