Pascal Frei

3.9k total citations
71 papers, 2.3k citations indexed

About

Pascal Frei is a scholar working on Epidemiology, Genetics and Surgery. According to data from OpenAlex, Pascal Frei has authored 71 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Epidemiology, 32 papers in Genetics and 17 papers in Surgery. Recurrent topics in Pascal Frei's work include Inflammatory Bowel Disease (29 papers), Microscopic Colitis (24 papers) and Protein Tyrosine Phosphatases (6 papers). Pascal Frei is often cited by papers focused on Inflammatory Bowel Disease (29 papers), Microscopic Colitis (24 papers) and Protein Tyrosine Phosphatases (6 papers). Pascal Frei collaborates with scholars based in Switzerland, Germany and United States. Pascal Frei's co-authors include Gerhard Rogler, Michael Scharl, Stephan R. Vavricka, Michael Fried, Luc Biedermann, Jonas Zeitz, Achim Weber, Martin J. Loessner, Jessica Mwinyi and Markus Schuppler and has published in prestigious journals such as Gastroenterology, PLoS ONE and Gut.

In The Last Decade

Pascal Frei

69 papers receiving 2.2k citations

Peers

Countries citing papers authored by Pascal Frei

Since Specialization

Citations

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

Fields of papers citing papers by Pascal Frei

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Pascal Frei

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

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Perianal fistulodesis – A pilot study of a novel minimally invasive surgical and medical approach for closure of perianal fistulae 2021 ·World Journal of Gastrointestinal Surgery ·(unknown), (unknown), (unknown), Pascal Frei, Luc Biedermann, (unknown), Michael Scharl, Gerhard Rogler, Matthias Turina, Andreas Rickenbacher, Benjamin Misselwitz	0
2	Vegetarian or gluten‐free diets in patients with inflammatory bowel disease are associated with lower psychological well‐being and a different gut microbiota, but no beneficial effects on the course of the disease 2019 ·United European Gastroenterology Journal ·Philipp Schreiner, Bahtiyar Yılmaz, Jean‐Benoît Rossel, Yannick Franc, Benjamin Misselwitz, Michael Scharl, Jonas Zeitz, Pascal Frei, Thomas Greuter, Stephan R. Vavricka, Valérie Pittet, Alexander Siebenhüner, Pascal Juillerat, Roland von Känel, Andrew J. Macpherson, Gerhard Rogler, Luc Biedermann, (unknown)	74
3	Association of IBD specific treatment and prevalence of pain in the Swiss IBD cohort study 2019 ·PLoS ONE ·(unknown), Sylvie Scharl, Stephan R. Vavricka, Gerhard Rogler, Nicolas Fournier, Valérie Pittet, Michael Scharl, Thomas Greuter, Philipp Schreiner, Pascal Frei, Benjamin Misselwitz, Luc Biedermann, Jonas Zeitz, (unknown)	6
4	Long-Term Efficacy and Safety of Certolizumab Pegol in an Unselected Crohn's Disease Population: The FACTS III Survey 2017 ·Digestive Diseases ·Stephan R. Vavricka, (unknown), Gerhard Rogler, Alain Schoepfer, Frank Seibold, Jan Borovicka, Pascal Frei, Jonas Zeitz, Thomas Greuter, Christine N. Manser, Michael Scharl, Benjamin Misselwitz, Alex Straumann, Pierre Michetti, Luc Biedermann, (unknown)	3
5	The Impact of Azathioprine-Associated Lymphopenia on the Onset of Opportunistic Infections in Patients with Inflammatory Bowel Disease 2016 ·PLoS ONE ·(unknown), Luc Biedermann, Pascal Frei, Stephan R. Vavricka, Sylvie Scharl, Jonas Zeitz, Michael Christian Sulz, Michael Fried, Gerhard Rogler, Michael Scharl	29
6	Genotype-Phenotype Associations of the CD-Associated Single Nucleotide Polymorphism within the Gene Locus Encoding Protein Tyrosine Phosphatase Non-Receptor Type 22 in Patients of the Swiss IBD Cohort 2016 ·PLoS ONE ·Marianne R. Spalinger, Jonas Zeitz, Luc Biedermann, Jean‐Benoît Rossel, Michael Christian Sulz, Pascal Frei, Sylvie Scharl, Stephan R. Vavricka, Michael Fried, Gerhard Rogler, Michael Scharl, (unknown)	6
7	Patients’ perceptions on the impact of coffee consumption in inflammatory bowel disease: friend or foe? – a patient survey 2015 ·Nutrition Journal ·(unknown), (unknown), Sylvie Scharl, Michael Scharl, Pascal Frei, Stephan R. Vavricka, Michael Fried, Michael Christian Sulz, Nico Wiegand, Gerhard Rogler, Luc Biedermann	15
8	High Rates of Smoking Especially in Female Crohn’s Disease Patients and Low Use of Supportive Measures to Achieve Smoking Cessation—Data from the Swiss IBD Cohort Study 2015 ·Journal of Crohn s and Colitis ·Luc Biedermann, Nicolas Fournier, Benjamin Misselwitz, Pascal Frei, Jonas Zeitz, Christine N. Manser, Valérie Pittet, Pascal Juillerat, Roland von Känel, Michael Fried, Stephan R. Vavricka, Gerhard Rogler, (unknown)	46
9	Addressing current treatment challenges in Crohn's disease in real life: A physician's survey 2014 ·Digestive and Liver Disease ·Stephan R. Vavricka, (unknown), Christine N. Manser, Pascal Frei, Emanuel Burri, Michael Fried, Alain Schoepfer, Laurent Peyrin‐Biroulet, Pierre Michetti, Gerhard Rogler, Luc Biedermann	3
10	Risk Factors for Repetitive Ileocolic Resection in Patients with Crohnʼs Disease 2014 ·Inflammatory Bowel Diseases ·Christine N. Manser, Pascal Frei, Tanja Grandinetti, Luc Biedermann, Jessica Mwinyi, Stephan R. Vavricka, Alain Schoepfer, Michael Fried, Gerhard Rogler	29
11	Elderly age is not a negative predictive factor for virological response to therapy with pegylated interferon‐α and ribavirin in chronic hepatitis C virus patients 2013 ·Liver International ·Pascal Frei, (unknown), Ulrike Held, Reto Kofmehl, Christine N. Manser, Johannes Schmitt, Joachim C. Mertens, Monika Rau, (unknown), Tilman Gerlach, Francesco Negro, Markus H. Heim, Darius Moradpour, Andreas Cerny, Jean‐François Dufour, Beat Müllhaupt, Andreas Geier, (unknown)	10
12	Smoking Cessation Induces Profound Changes in the Composition of the Intestinal Microbiota in Humans 2013 ·PLoS ONE ·Luc Biedermann, Jonas Zeitz, Jessica Mwinyi, (unknown), Ateequr Rehman, S. Ott, Claudia Steurer‐Stey, Anja Frei, Pascal Frei, Michael Scharl, Martin J. Loessner, Stephan R. Vavricka, Michael Fried, Stefan Schreiber, Markus Schuppler, Gerhard Rogler	307
13	Loss of Protein Tyrosine Phosphatase Nonreceptor Type 22 Regulates Interferon-γ–Induced Signaling in Human Monocytes 2013 ·Gastroenterology ·Marianne R. Spalinger, Silvia Lang, Achim Weber, Pascal Frei, Michael Fried, Gerhard Rogler, Michael Scharl	47
14	Epithelial-to-mesenchymal transition in a fistula-associated anal adenocarcinoma in a patient with long-standing Crohn’s disease 2013 ·European Journal of Gastroenterology & Hepatology ·Michael Scharl, Pascal Frei, Sandra M. Frei, Luc Biedermann, Achim Weber, Gerhard Rogler	32
15	Topical Therapies in Inflammatory Bowel Disease 2012 ·Digestion ·Pascal Frei, Luc Biedermann, Christine N. Manser, (unknown), Markus G. Manz, Stephan R. Vavricka, Gerhard Rogler	26
16	Liver Transplantation because of Acute Liver Failure due to Heme Arginate Overdose in a Patient with Acute Intermittent Porphyria 2012 ·Case Reports in Gastroenterology ·Pascal Frei, Elisabeth I. Minder, Natascia Corti, Beat Muellhaupt, Andreas Geier, Heiner Adams, Jean-Paul Dutertre, Alain Rudiger, Philipp Dutkowski, Marco Maggiorini, Christoph C. Ganter	18
17	Therapy of Steroid-Resistant Inflammatory Bowel Disease 2012 ·Digestion ·Markus G. Manz, Stephan R. Vavricka, (unknown), Péter L. Lakatos, Gerhard Rogler, Pascal Frei, Ekaterina Safroneeva, Alain Schoepfer	26
18	Systematic Assessment of Factors Influencing Preferences of Crohnʼs Disease Patients in Selecting an Anti-Tumor Necrosis Factor Agent (CHOOSE TNF TRIAL) 2011 ·Inflammatory Bowel Diseases ·Stephan R. Vavricka, (unknown), Michael Scharl, Gerhard Rogler, Jonas Zeitz, Pascal Frei, Alex Straumann, Janek Binek, Alain Schoepfer, Michael Fried	52
19	Insufficient Medication Documentation at Hospital Admission of Cardiac Patients: A Challenge for Medication Reconciliation 2009 ·Journal of Cardiovascular Pharmacology ·Pascal Frei, Lars C Huber, (unknown), Marco Bonani, Thomas F. Lüscher	12
20	Identification and localization of sodium-phosphate cotransporters in hepatocytes and cholangiocytes of rat liver 2004 ·American Journal of Physiology-Gastrointestinal and Liver Physiology ·Pascal Frei, Bo Gao, Bruno Hagenbuch, Alfonso Mate, Jürg Biber, Heini Murer, Peter J. Meier, Bruno Stieger	37

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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