Fredrik Hjern
- Surgery top 2%
- Oncology top 5%
- Emergency Medicine top 0.5%
- Pulmonary and Respiratory Medicine
- Cardiology and Cardiovascular Medicine top 10%
- Co-authors
- Alicja WolkNiclas HåkanssonKenneth SmedhLars PåhlmanStaffan HaapaniemiAbbas ChabokClaes JohanssonAnders Mellgren
- Topics
- Diverticular Disease and Complications (21 papers)Colorectal Cancer Surgical Treatments (13 papers)Appendicitis Diagnosis and Management (13 papers)
- Cited by
- Emergency MedicineSurgeryOncology
- Partner nations
- SwedenUnited KingdomUnited States
In The Last Decade
Fredrik Hjern
41 papers receiving 2.0k citations
Hit Papers
Peers
Comparison fields: 5 of 79
- Surgery 1.7k
- Oncology 793
- Emergency Medicine 685
- Pulmonary and Respiratory Medicine 198
- Cardiology and Cardiovascular Medicine 153
Countries citing papers authored by Fredrik Hjern
This map shows the geographic impact of Fredrik Hjern'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 Fredrik Hjern with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Fredrik Hjern more than expected).
Fields of papers citing papers by Fredrik Hjern
This network shows the impact of papers produced by Fredrik Hjern. 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 Fredrik Hjern. The network helps show where Fredrik Hjern may publish in the future.
Co-authorship network of co-authors of Fredrik Hjern
This figure shows the co-authorship network connecting the top 25 collaborators of Fredrik Hjern. A scholar is included among the top collaborators of Fredrik Hjern 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 Fredrik Hjern. Fredrik Hjern is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 1 | |
| 2 | 15 | |
| 3 | 3 | |
| 4 | 40 | |
| 5 | 21 | |
| 6 | 17 | |
| 7 | 29 | |
| 8 | 48 | |
| 9 | 49 | |
| 10 | 12 | |
| 11 | 71 | |
| 12 | 96 | |
| 13 | 91 | |
| 14 | 52 | |
| 15 | 38 | |
| 16 | 21 | |
| 17 | 72 | |
| 18 | 101 | |
| 19 | 34 | |
| 20 | 41 |
About Fredrik Hjern
Fredrik Hjern is a scholar working on Emergency Medicine, Surgery and Oncology, having authored 41 papers that have together received 2.1k indexed citations. Recurring topics across this work include Diverticular Disease and Complications (21 papers), Colorectal Cancer Surgical Treatments (13 papers) and Appendicitis Diagnosis and Management (13 papers). The work is most often cited by research in Emergency Medicine (685 citations), Surgery (1.7k citations) and Oncology (793 citations). Fredrik Hjern has collaborated with scholars based in Sweden, United Kingdom and United States. Frequent co-authors include Alicja Wolk, Niclas Håkansson, Kenneth Smedh, Lars Påhlman, Staffan Haapaniemi, Abbas Chabok, Claes Johansson, Anders Mellgren, Anna Martling and Torbjörn Holm. Their work appears in journals such as The Lancet Oncology, Clinical Cancer Research and The American Journal of Gastroenterology.
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.