N. Johnsen

446 total citations
15 papers, 298 citations indexed

About

N. Johnsen is a scholar working on Reproductive Medicine, Surgery and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, N. Johnsen has authored 15 papers receiving a total of 298 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Reproductive Medicine, 5 papers in Surgery and 3 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in N. Johnsen's work include Sperm and Testicular Function (6 papers), Testicular diseases and treatments (3 papers) and Cardiac Health and Mental Health (3 papers). N. Johnsen is often cited by papers focused on Sperm and Testicular Function (6 papers), Testicular diseases and treatments (3 papers) and Cardiac Health and Mental Health (3 papers). N. Johnsen collaborates with scholars based in Germany and Norway. N. Johnsen's co-authors include R. Tauber, E Lærum, Pål Smith, Egil Bodd, Per Kragh Andersen, Stig Larsen, Peter K. Smith, Einar Heldal, Tore W. Steen and Helmut E. Meyer and has published in prestigious journals such as The Journal of Urology, Advances in experimental medicine and biology and Family Practice.

In The Last Decade

N. Johnsen

15 papers receiving 265 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
N. Johnsen Germany 8 129 82 71 65 60 15 298
Mary Anne Jamieson Canada 14 122 0.9× 49 0.6× 83 1.2× 79 1.2× 62 1.0× 43 490
Kjeld Leisgård Rasmussen Denmark 12 85 0.7× 57 0.7× 35 0.5× 102 1.6× 20 0.3× 50 353
Vanessa Colagiovanni Italy 10 52 0.4× 107 1.3× 24 0.3× 94 1.4× 58 1.0× 16 410
Donald E. Praiss United States 10 179 1.4× 59 0.7× 76 1.1× 98 1.5× 108 1.8× 19 392
Pauli Kajanoja Finland 13 81 0.6× 51 0.6× 25 0.4× 40 0.6× 26 0.4× 37 542
E Guiloff Chile 10 125 1.0× 91 1.1× 31 0.4× 83 1.3× 16 0.3× 18 449
Edward C. Hill United States 13 118 0.9× 50 0.6× 21 0.3× 201 3.1× 44 0.7× 28 663
Amanda Selk Canada 12 34 0.3× 86 1.0× 29 0.4× 150 2.3× 66 1.1× 38 351
Murray A. Freedman United States 9 72 0.6× 65 0.8× 23 0.3× 42 0.6× 12 0.2× 15 423
Margaret Polaneczky United States 13 77 0.6× 102 1.2× 168 2.4× 66 1.0× 36 0.6× 24 587

Countries citing papers authored by N. Johnsen

Since Specialization
Citations

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

Fields of papers citing papers by N. Johnsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of N. Johnsen

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

All Works

15 of 15 papers shown
1.
Johnsen, N., et al.. (2005). Cohort analysis of asylum seekers in Oslo, Norway, 1987-1995: effectiveness of screening at entry and TB incidence in subsequent years.. PubMed. 9(1). 37–42. 19 indexed citations
2.
Steen, Tore W., et al.. (2003). [Extrapulmonary tuberculosis among Somali immigrants in Norway].. PubMed. 123(6). 818–21. 1 indexed citations
3.
Johnsen, N. & R. Tauber. (1999). ANTEGRADE SCROTAL SCLEROTHERAPY. The Journal of Urology. 347–347. 1 indexed citations
4.
Johnsen, N., et al.. (1997). Semen Analysis after Treatment of Varicocele by Antegrade Scrotal Sclerotherapy. Advances in experimental medicine and biology. 424. 187–188. 3 indexed citations
5.
Johnsen, N., et al.. (1997). [Spermiogram findings following antegrade sclerosing of a varicocele].. PubMed. 147(4-5). 81–3. 2 indexed citations
6.
Johnsen, N., et al.. (1997). Spermiogrammbefunde nach antegrader Varicocelen-Sklerosierung. Aktuelle Urologie. 28(6). 337–343. 1 indexed citations
7.
Johnsen, N. & R. Tauber. (1996). Financial analysis of antegrade scrotal sclerotherapy for men with varicoceles. British Journal of Urology. 77(1). 129–132. 29 indexed citations
8.
Pfeiffer, D., N. Johnsen, & Robert Tauber. (1994). Die antegrade skrotale Sklerosierung der Varicocele testis im Kindes- und Jugendalter. Aktuelle Urologie. 25(5). 268–271. 4 indexed citations
9.
Tauber, R. & N. Johnsen. (1994). Antegrade Scrotal Sclerotherapy for the Treatment of Varicocele: Technique and Late Results. The Journal of Urology. 151(2). 386–390. 92 indexed citations
10.
Tauber, R. & N. Johnsen. (1993). [Antegrade scrotal sclerotherapy for treatment of testicular varicocele. Technique and late results].. PubMed. 32(4). 320–6. 11 indexed citations
11.
Andersen, Per Kragh, et al.. (1992). Oestriol in the Prophylactic Treatment of Recurrent Urinary Tract Infections in Postmenopausal Women. Scandinavian Journal of Primary Health Care. 10(2). 139–142. 60 indexed citations
12.
Lærum, E, et al.. (1991). Positive Psychological and Life-style Changes After Myocardial Infarction: A Follow-up Study After 2–4 Years. Family Practice. 8(3). 229–233. 11 indexed citations
13.
Johnsen, N., Fredrik Engelstad, & Dag Bruusgaard. (1988). The General Practitioner and the Family:A Study of the Use of General Practitioners' Services by Families with Children. Scandinavian Journal of Primary Health Care. 6(3). 155–160. 4 indexed citations
14.
Lærum, E, N. Johnsen, Pål Smith, & Stig Larsen. (1988). Myocardial Infarction May Induce Positive Changes in Life-style and in the Quality of Life. Scandinavian Journal of Primary Health Care. 6(2). 67–71. 35 indexed citations
15.
Lærum, E, et al.. (1987). Can Myocardial Infarction Induce Positive Changes in Family Relationships?. Family Practice. 4(4). 302–305. 25 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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