Vera E. Valkhoff

2.0k citations

39 papers · 1.5k · h-index 17

Impact in

Gastroenterology top 2%
- Gastroesophageal reflux and treatments
- Gastrointestinal Bleeding Diagnosis and Treatment
Internal Medicine top 5%
- Venous Thromboembolism Diagnosis and Management

Papers in

Pharmacology 20
- Inflammatory mediators and NSAID effects 20
Cardiology and Cardiovascular Medicine 8
- Antiplatelet Therapy and Cardiovascular Diseases 7
- Atrial Fibrillation Management and Outcomes 3

Co-authors: Ernst J. Kuipers (22 shared papers)Miriam Sturkenboom (34 shared papers)Eric T.T.L. Tjwa (2 shared papers)Ingrid L. Holster (2 shared papers)Martijn J. Schuemie (9 shared papers)Johan van der Lei (7 shared papers)Giampiero Mazzaglia (11 shared papers)Eva M. van Soest (10 shared papers)
Journals: Gastroenterology (9 papers)Alimentary Pharmacology & Therapeutics (4 papers)Pharmacoepidemiology and Drug Safety (2 papers)PLoS ONE (2 papers)Annals of the Rheumatic Diseases (2 papers)
Partner nations: Netherlands Italy Canada

In The Last Decade

Vera E. Valkhoff

38 papers receiving 1.4k citations

Peers

Countries citing papers authored by Vera E. Valkhoff

Since Specialization

Citations

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

Fields of papers citing papers by Vera E. Valkhoff

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Vera E. Valkhoff. 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 Vera E. Valkhoff. The network helps show where Vera E. Valkhoff may publish in the future.

Co-authors

The 25 scholars most cited alongside Vera E. Valkhoff, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Vera E. Valkhoff Line = papers co-authored together Vera E. Valkhoff links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 39 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	New Oral Anticoagulants Increase Risk for Gastrointestinal Bleeding: A Systematic Review and Meta-analysis Gastroenterology ·Ingrid L. Holster, Vera E. Valkhoff, Ernst J. Kuipers, Eric T.T.L. Tjwa	2013	292
2	Non-steroidal anti-inflammatory drugs and risk of heart failure in four European countries: nested case-control study BMJ ·Andrea Arfè, Lorenza Scotti, Cristina Varas‐Lorenzo, Federica Nicotra, Antonella Zambon, Bianca Kollhorst, Tania Schink, Edeltraut Garbe, Ron M. C. Herings, Huub Straatman, R Schade, Marco Villa, S Lucchi, Vera E. Valkhoff, Silvana Romio, Frantz Thiessard, Martijn J. Schuemie, Alexandre Pariente, Miriam Sturkenboom, Giovanni Corrao	2016	202
3	Proton Pump Inhibitors Reduce the Risk of Neoplastic Progression in Patients With Barrett's Esophagus Clinical Gastroenterology and Hepatology ·Florine Kastelein, Manon C.W. Spaander, Ewout W. Steyerberg, Katharina Biermann, Vera E. Valkhoff, Ernst J. Kuipers, Marco J. Bruno	2012	152
4	Risk of Upper Gastrointestinal Bleeding From Different Drug Combinations Gastroenterology ·Gwen Masclee, Vera E. Valkhoff, Preciosa M. Coloma, Maria de Ridder, Silvana Romio, Martijn J. Schuemie, Ron M. C. Herings, Rosa Gini, Giampiero Mazzaglia, Gino Picelli, Lorenza Scotti, Lars Pedersen, Ernst J. Kuipers, Johan van der Lei, Miriam Sturkenboom	2014	110
5	Identification of acute myocardial infarction from electronic healthcare records using different disease coding systems: a validation study in three European countries BMJ Open ·Preciosa M. Coloma, Vera E. Valkhoff, Giampiero Mazzaglia, Malene Schou Nielsson, Lars Pedersen, Mariam Molokhia, Mees Mosseveld, Paolo Morabito, Martijn J. Schuemie, Johan van der Lei, Miriam Sturkenboom, Gianluca Trifirò	2013	106
6	High-risk use of over-the-counter non-steroidal anti-inflammatory drugs: a population-based cross-sectional study British Journal of General Practice ·Aafke R Koffeman, Vera E. Valkhoff, (unknown), Geert W. ‘t Jong, Miriam Sturkenboom, Patrick Bindels, Johan van der Lei, Pim A. J. Luijsterburg, Sita Bierma‐Zeinstra	2014	76
7	Risk factors for gastrointestinal bleeding associated with low-dose aspirin Best Practice & Research Clinical Gastroenterology ·Vera E. Valkhoff, Miriam Sturkenboom, Ernst J. Kuipers	2012	69
8	Suboptimal gastroprotective coverage of NSAID use and the risk of upper gastrointestinal bleeding and ulcers: an observational study using three European databases Gut ·Eva M. van Soest, Vera E. Valkhoff, Giampiero Mazzaglia, R Schade, Mariam Molokhia, Jay L. Goldstein, Sonia Hernández–Dı́az, Gianluca Trifirò, J P Dieleman, Ernst J. Kuipers, Miriam Sturkenboom	2011	56
9	Validation study in four health-care databases: upper gastrointestinal bleeding misclassification affects precision but not magnitude of drug-related upper gastrointestinal bleeding risk Journal of Clinical Epidemiology ·Vera E. Valkhoff, Preciosa M. Coloma, Gwen Masclee, Rosa Gini, Francesco Innocenti, Francesco Lapi, Mariam Molokhia, Mees Mosseveld, Malene Schou Nielsson, Martijn J. Schuemie, Frantz Thiessard, Johan van der Lei, Miriam Sturkenboom, Gianluca Trifirò	2014	48
10	Risk of acute myocardial infarction during use of individual NSAIDs: A nested case-control study from the SOS project PLoS ONE ·Gwen Masclee, Huub Straatman, Andrea Arfè, Jordi Castellsagué, Edeltraut Garbe, Ron M. C. Herings, Bianca Kollhorst, S Lucchi, Susana Perez‐Gutthann, Silvana Romio, R Schade, Tania Schink, Martijn J. Schuemie, Lorenza Scotti, Cristina Varas‐Lorenzo, Vera E. Valkhoff, Marco Villa, Miriam Sturkenboom	2018	44
11	NHERF1 and NHERF2 are necessary for multiple but usually separate aspects of basal and acute regulation of NHE3 activity American Journal of Physiology-Cell Physiology ·Rafiquel Sarker, Vera E. Valkhoff, Nicholas C. Zachos, Rong Lin, Boyoung Cha, Tian-E Chen, Sandra E. Guggino, Mirza Žižak, Hugo de Jonge, Boris M. Hogema, Mark Donowitz	2010	41
12	Risk of ischemic stroke and the use of individual non-steroidal anti-inflammatory drugs: A multi-country European database study within the SOS Project PLoS ONE ·Tania Schink, Bianca Kollhorst, Cristina Varas Lorenzo, Andrea Arfè, Ron M. C. Herings, S Lucchi, Silvana Romio, R Schade, Martijn J. Schuemie, Huub Straatman, Vera E. Valkhoff, Marco Villa, Miriam Sturkenboom, Edeltraut Garbe	2018	38
13	Time‐trends in gastroprotection with nonsteroidal anti‐inflammatory drugs (NSAIDs) Alimentary Pharmacology & Therapeutics ·Vera E. Valkhoff, Eva M. van Soest, Miriam Sturkenboom, Ernst J. Kuipers	2010	37
14	Risk of recurrent myocardial infarction with the concomitant use of clopidogrel and proton pump inhibitors Alimentary Pharmacology & Therapeutics ·Vera E. Valkhoff, Geert W. ‘t Jong, Eva M. van Soest, Ernst J. Kuipers, Miriam Sturkenboom	2010	35
15	Population-based analysis of non-steroidal anti-inflammatory drug use among children in four European countries in the SOS project: what size of data platforms and which study designs do we need to assess safety issues? BMC Pediatrics ·Vera E. Valkhoff, R Schade, Geert W. ‘t Jong, Silvana Romio, Martijn J. Schuemie, Andrea Arfè, Edeltraut Garbe, Ron M. C. Herings, S Lucchi, Gino Picelli, Tania Schink, Huub Straatman, Marco Villa, Ernst J. Kuipers, Miriam Sturkenboom	2013	29
16	Low-Dose Acetylsalicylic Acid Use and the Risk of Upper Gastrointestinal Bleeding: A Meta-Analysis of Randomized Clinical Trials and Observational Studies Canadian Journal of Gastroenterology ·Vera E. Valkhoff, Miriam Sturkenboom, Catherine Hill, Sander Veldhuyzen van Zanten, Ernst J. Kuipers	2013	27
17	Idiopathic Acute Liver Injury in Paediatric Outpatients: Incidence and Signal Detection in Two European Countries Drug Safety ·Carmen Ferrajolo, Katia Verhamme, Gianluca Trifirò, Geert W. ‘t Jong, Carlo Giaquinto, Gino Picelli, Alessandro Oteri, Sandra de Bie, Vera E. Valkhoff, Martijn J. Schuemie, Giampiero Mazzaglia, Claudio Cricelli, Francesco Rossi, Annalisa Capuano, Miriam Sturkenboom	2013	19
18	Time‐trends in the prescribing of gastroprotective agents to primary care patients initiating low‐dose aspirin or non‐steroidal anti‐inflammatory drugs: a population‐based cohort study British Journal of Clinical Pharmacology ·Margaretha F. Warlé‐van Herwaarden, Aafke R Koffeman, Vera E. Valkhoff, Geert W. ‘t Jong, Cornelis Kramers, Miriam Sturkenboom, Peter A. G. M. De Smet	2015	16
19	Adherence to gastroprotection during cyclooxygenase 2 inhibitor treatment and the risk of upper gastrointestinal tract events: A population‐based study Arthritis & Rheumatism ·Vera E. Valkhoff, Eva M. van Soest, Giampiero Mazzaglia, Mariam Molokhia, R Schade, Gianluca Trifirò, Jay L. Goldstein, Sonia Hernández–Dı́az, Ernst J. Kuipers, Miriam Sturkenboom	2012	15
20	Quick assessment of drug-related admissions over time (QUADRAT study) Pharmacoepidemiology and Drug Safety ·Margaretha F. Warlé‐van Herwaarden, Vera E. Valkhoff, Ron M. C. Herings, Marjolein Engelkes, Jan C. van Blijderveen, Eline M. Rodenburg, Sandra de Bie, Jelmer Alsma, Caroline van de Steeg-Gompel, Cornelis Kramers, Ronald H.B. Meyboom, Miriam Sturkenboom, Peter A. G. M. De Smet	2015	12

About Vera E. Valkhoff

Vera E. Valkhoff is a scholar working on Pharmacology, Cardiology and Cardiovascular Medicine, Surgery, Pulmonary and Respiratory Medicine and Gastroenterology, having authored 39 papers that have together received 1.5k indexed citations. Recurring topics across this work include Inflammatory mediators and NSAID effects (20 papers), Antiplatelet Therapy and Cardiovascular Diseases (7 papers), Atrial Fibrillation Management and Outcomes (3 papers), Gastroesophageal reflux and treatments (2 papers), Pharmaceutical Practices and Patient Outcomes (2 papers), Lipoproteins and Cardiovascular Health (2 papers), Respiratory and Cough-Related Research (2 papers) and Pharmacovigilance and Adverse Drug Reactions (2 papers). The work is most often cited by research in Gastroenterology (167 citations), Internal Medicine (93 citations), Pharmacology (311 citations), Cardiology and Cardiovascular Medicine (358 citations) and Toxicology (41 citations). Vera E. Valkhoff has collaborated with scholars based in Netherlands, Italy and Canada. Frequent co-authors include Ernst J. Kuipers, Miriam Sturkenboom, Eric T.T.L. Tjwa, Ingrid L. Holster, Martijn J. Schuemie, Johan van der Lei, Giampiero Mazzaglia, Eva M. van Soest, Ron M. C. Herings and R Schade. Their work appears in journals such as Gastroenterology, Alimentary Pharmacology & Therapeutics, Pharmacoepidemiology and Drug Safety, PLoS ONE and Annals of the Rheumatic Diseases.

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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Vera E. Valkhoff

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