Anja Frei

261 total papers · 4.6k total citations
88 papers, 2.1k citations indexed

About

Anja Frei is a scholar working on Pulmonary and Respiratory Medicine, General Health Professions and Epidemiology. According to data from OpenAlex, Anja Frei has authored 88 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Pulmonary and Respiratory Medicine, 25 papers in General Health Professions and 22 papers in Epidemiology. Recurrent topics in Anja Frei’s work include Chronic Obstructive Pulmonary Disease (COPD) Research (25 papers), Chronic Disease Management Strategies (19 papers) and Physical Activity and Health (11 papers). Anja Frei is often cited by papers focused on Chronic Obstructive Pulmonary Disease (COPD) Research (25 papers), Chronic Disease Management Strategies (19 papers) and Physical Activity and Health (11 papers). Anja Frei collaborates with scholars based in Switzerland, United States and United Kingdom. Anja Frei's co-authors include Milo A. Puhan, Claudia Steurer‐Stey, Judith García‐Aymerich, Elena Gimeno‐Santos, Nicholas S Hopkinson, Gerben ter Riet, Michael I. Polkey, Thomas Rosemann, Thierry Troosters and Marco Zoller and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and PLoS ONE.

In The Last Decade

Co-authorship network of co-authors of Anja Frei

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

Anja Frei

82 papers receiving 2.1k citations

Fields of papers citing papers by Anja Frei

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Anja Frei

Since Specialization
Citations

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

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.

Explore authors with similar magnitude of impact

Rankless by CCL
2026