Research
Read how they describe their research on their University of Toronto profile.
Latest papers
VITT-like Monoclonal Gammopathy of Thrombotic Significance
New England Journal of Medicine · 2025
High-dose intravenous immunoglobulin G and usual heparin anticoagulation for urgent cardiac surgery in a patient with severe autoimmune heparin-induced thrombocytopenia
Journal of Thrombosis and Haemostasis · 2025
Clinical characteristics, management, and outcomes of traumatic cerebral venous sinus thrombosis
Journal of Trauma and Acute Care Surgery · 2025
Latest funding
- $520,788
Anticoagulation Therapy Timing in Atrial Fibrillation after Chronic Subdural Hematoma External Drainage(the ATTACHED RCT)
CIHR · 2021 · Co-investigator
- $150,000
CanVECTOR (Canadian Venous Thromboembolism Clinical Trials and Outcomes Research) Network
CIHR · 2020 · Co-investigator
- $2,314,126
PROphylaxis for venous ThromboEmbolism in Severe Traumatic brain injury (PROTEST): a Double-blind Randomized Controlled Trial
CIHR · 2018 · Co-investigator
From the 150 most recent of 181 publications.
VITT-like Monoclonal Gammopathy of Thrombotic Significance
Wang JJ, Warkentin TE, Schönborn L, Wheeler MB, Geerts WH, Costedoat-Chalumeau N, Gendron N, Ene G, Lozano M, Langer F
High-dose intravenous immunoglobulin G and usual heparin anticoagulation for urgent cardiac surgery in a patient with severe autoimmune heparin-induced thrombocytopenia
Warkentin TE, Geerts W, Sheppard J-AI, Guest CB, Cohen G, Perez d'Empaire P, Nazy I, Arnold DM
Clinical characteristics, management, and outcomes of traumatic cerebral venous sinus thrombosis
Kapitanski L, Thiyagarajah K, Makedonov I, Berger F, Abdulrehman J, Chapman M, da Costa L, Geerts W, Hawkes C, Pirouzmand F
Prophylaxis for venous thromboembolism in traumatic brain injury: protocol for a randomised controlled trial
Pirouzmand F, Mathieu F, Mansouri A, Kavikondala K, Alkins R, Boyd JG, Christie S, Couillard P, Cusimano MD, Engels PT
Very long–term risk of moderate-to-severe postthrombotic syndrome after deep vein thrombosis
J.‐P. Galanaud, Lila Krebs-Drouot, Céline Genty-Vermorel, William H Geerts, Jameel Abdulrehman, S. Blaise, Gudrun Böge, Patrick Carpentier, Carole Rolland, Marie‐Antoinette Sevestre‐Pietri, Gilles Pernod, Joris Giai, Jean-Luc Bosson
Thromboprophylaxis in hospitalized trauma patients: a systematic review and meta-analysis of implementation strategies
Asanthi Ratnasekera, Sirivan Suon Seng, Marina Ciarmella, Alexandria Gallagher, K.Peter Poirier, Eric Harding, Elliott Richard Haut, William H Geerts, Patrick Brian Murphy
Venous Thromboembolism Prevention in Rehabilitation
Geerts WH, Jeong E, Robinson LR, Khosravani H
EV459/#956 Venous thromboembolism during chemotherapy in gynecology oncology: a multicenter cohort study
Elisabeth Spénard, Genevieve K. Lennox, William H Geerts, Yulia Lin, Christina Lee, Lilian Tran Gien, Al Covens, Katherine J. Pulman, Charles Henry Lim, Daniel W. Yokom, Danielle Vicus
Clinical Characteristics, Management and Outcomes of Traumatic Cerebral Sinus Vein Thrombosis
Kapitanski L, Thiyagarajah K, Berger F, Makedonov I, Fowler R, Abdulrehman J, Geerts W, Galanaud J-P
Apixaban for extended postoperative thromboprophylaxis in gynecologic oncology patients undergoing laparotomy
Elisabeth Spénard, William H Geerts, Yulia Lin, Lilian Tran Gien, Rachel Kupets, Al Covens, Danielle Vicus
Anticoagulation Therapy Timing in Atrial Fibrillation after Chronic Subdural Hematoma External Drainage(the ATTACHED RCT)
Principal investigators: Pirouzmand, FARHAD; Dowlatshahi, Dariush; Scales, Damon C
Keywords: Anticoagulation Therapy; Chronic Sdh Management; Stroke Prevention
CanVECTOR (Canadian Venous Thromboembolism Clinical Trials and Outcomes Research) Network
Principal investigators: Kahn, Susan R; Rodger, Marc A
Keywords: Anticoagulation; Biomarkers; Deep Vein Thrombosis; Knowledge Translation; Outcomes Research; Patient Engagement; Pulmonary Embolism; Quality Of Care; Randomized Clinical Trial; Venous Thromboembolism
PROphylaxis for venous ThromboEmbolism in Severe Traumatic brain injury (PROTEST): a Double-blind Randomized Controlled Trial
Principal investigators: Pirouzmand, FARHAD; Scales, Damon C
Keywords: Intracranial Hemorrhage; Randomized Controlled Trial; Severe Traumatic Brain Injury; Venous Thromboembolism
Thromboprophylaxis After Significant Traumatic Brain Injury: A Randomized Controlled Trial
Principal investigators: Pirouzmand, FARHAD; Scales, Damon C
Keywords: Anticoagulant Thromboprophylaxis; Deep Vein Thrombosis; Intracranial Bleeding; Pulmonary Embolism; Sequential Compression Device; Thromboprophylaxis; Traumatic Brain Injury; Venous Thromboembolism
CanVECTOR (Canadian Venous Thromboembolism Clinical Trials and Outcomes Research) Network
Principal investigators: Kahn, Susan R; Rodger, Marc A
Keywords: Anticoagulation; Biomarkers; Deep Vein Thrombosis; Knowledge Translation; Outcomes Research; Patient Engagement; Pulmonary Embolism; Quality Of Care; Randomized Clinical Trial; Venous Thromboembolism
Improving long term outcomes after venous thromboembolism (VTE)
Principal investigators: Kahn, Susan R
Keywords: Cost Effectiveness; Inflammation; Knowledge Synthesis; Knowledge Translation; Outcomes Research; Post Thrombotic Syndrome; Quality Of Life; Randomized Clinical Trials; Treatment; Venous Thromboembolism
Effectiveness of interventions for implementation of thromboprophylaxis in hospitalized patients at risk for venous thromboembolism: An updated systematic review and metaanalysis
Principal investigators: Geerts, William H; Kahn, Susan R
Keywords: Complex Interventions; Hospital Mortality; Hospitalized Patients; Knowledge Translation; Patient Safety; Prevention; Systematic Review; Venous Thromboembolism
Evaluation of interventions for implementation of thromboprophylaxis in hospitalized medical and surgical patients at risk for venous thromboembolism: A systematic review and metaanalysis
Principal investigators: Kahn, Susan R; Geerts, William H
Keywords: Complex Interventions; Hospitalized Patients; Patient Safety; Prevention; Systematic Review; Venous Thromboembolism
Prospective Evaluation of Long-term Outcomes after Pulmonary Embolism: The ELOPE Study
Principal investigators: Kahn, Susan R; Granton, John T; Hirsch, Andrew M
Keywords: Exercise Capacity; Longterm Outcomes; Natural History; Pulmonary Embolism; Quality Of Life; Risk Stratification
From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke and Brain Canada.
Frequent collaborators
- Donald Arnold and Jeannie Callum: 794 shared papers
- Deborah Cook and Gordon Guyatt: 345 shared papers
- Deborah Cook and Maureen Meade: 244 shared papers
- Gordon Guyatt and Diane Heels-Ansdell: 190 shared papers
- Deborah Cook and Diane Heels-Ansdell: 148 shared papers
- Jeffrey Weitz and Jack Hirsh: 122 shared papers
- Lauren Griffith and Gordon Guyatt: 114 shared papers
- Deborah Cook and Mark Crowther: 111 shared papers
- Gordon Guyatt and Maureen Meade: 109 shared papers
- Alexander Graham Gri Turpie and Jack Hirsh: 107 shared papers
- Mark Crowther and James Demetrios Douketis: 103 shared papers
- Marc Rodger and Susan Kahn: 102 shared papers
- Deborah Cook and Sangeeta Mehta: 96 shared papers
- Mark Norman Levine and Jack Hirsh: 85 shared papers
- David Anderson and Marc Rodger: 77 shared papers
- David Anderson and Susan Kahn: 75 shared papers
- Mark Crowther and Gordon Guyatt: 72 shared papers
- Deborah Cook and Lauren Griffith: 65 shared papers
- Donald Arnold and Ted Warkentin: 65 shared papers
- Donald Arnold and Mark Crowther: 59 shared papers
- Ted Warkentin and Jeannie Callum: 57 shared papers
- Jeffrey Weitz and Alexander Graham Gri Turpie: 56 shared papers
- Mark Crowther and Ted Warkentin: 55 shared papers
- Mark Crowther and Jeannie Callum: 47 shared papers
- Diane Heels-Ansdell and Maureen Meade: 45 shared papers
- Mark Crowther and Susan Kahn: 44 shared papers
- Deborah Cook and John Granton: 42 shared papers
- Maureen Meade and Sangeeta Mehta: 40 shared papers
- Mark Crowther and David Anderson: 39 shared papers
- Mark Crowther and Marc Rodger: 38 shared papers
- Mark Crowther and William Geerts: 33 shared papers
- James Demetrios Douketis and Alexander Graham Gri Turpie: 33 shared papers
- Mark Crowther and Jeffrey Weitz: 32 shared papers
- Jeffrey Weitz and James Demetrios Douketis: 28 shared papers
- Deborah Cook and William Geerts: 27 shared papers
- Mark Crowther and Christian Rabbat: 27 shared papers
- Maureen Meade and John Granton: 27 shared papers
- Deborah Cook and Christian Rabbat: 26 shared papers
- Alexander Graham Gri Turpie and Mark Norman Levine: 26 shared papers
- Diane Heels-Ansdell and Sangeeta Mehta: 25 shared papers
- John Granton and Sangeeta Mehta: 24 shared papers
- Gordon Guyatt and William Geerts: 20 shared papers
- Lauren Griffith and Maureen Meade: 18 shared papers
- Jeffrey Weitz and Mark Norman Levine: 17 shared papers
- Maureen Meade and Christian Rabbat: 16 shared papers
- Maureen Meade and William Geerts: 16 shared papers
- Susan Kahn and William Geerts: 16 shared papers
- James Demetrios Douketis and William Geerts: 14 shared papers
- David Anderson and William Geerts: 13 shared papers
- Christian Rabbat and William Geerts: 11 shared papers
- Alexander Graham Gri Turpie and William Geerts: 11 shared papers
- Jack Hirsh and William Geerts: 11 shared papers
- Diane Heels-Ansdell and William Geerts: 10 shared papers
- Lauren Griffith and William Geerts: 9 shared papers
- Ted Warkentin and William Geerts: 9 shared papers
- Nicole Mittmann and William Geerts: 9 shared papers
- Gordon Guyatt and Hans Kreder: 8 shared papers
- Gordon Guyatt and Nicole Mittmann: 8 shared papers
- Jeffrey Weitz and William Geerts: 8 shared papers
- John Granton and William Geerts: 8 shared papers
- Marc Rodger and William Geerts: 8 shared papers
- Mark Crowther and Hans Kreder: 7 shared papers
- Mark Norman Levine and William Geerts: 7 shared papers
- Hans Kreder and William Geerts: 7 shared papers
- Rita Selby and William Geerts: 7 shared papers
- Sangeeta Mehta and William Geerts: 6 shared papers
- Donald Arnold and William Geerts: 5 shared papers
- Joel Ray and William Geerts: 5 shared papers
- Jeannie Callum and William Geerts: 5 shared papers
- Deborah Cook and Nicole Mittmann: 4 shared papers
- Mark Crowther and Rita Selby: 4 shared papers
- Donald Arnold and Joel Ray: 3 shared papers
- Joel Ray and Jeannie Callum: 3 shared papers
- Jeannie Callum and Rita Selby: 3 shared papers
- Department of Medicine
- Department of Health Research Methods, Evidence, and Impact
- Department of Epidemiology, Biostatistics and Occupational Health
- Division of Hematology
- Department of Pharmacology and Toxicology
- Department of Pathology and Molecular Medicine
- Department of Surgery
- Other
Co-authors at University of Toronto, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Mark Crowther
Department of Medicine
33 shared papers, latest 2018
Deborah Cook
Department of Medicine
27 shared papers, latest 2018
Gordon Guyatt
Department of Health Research Methods, Evidence, and Impact
20 shared papers, latest 2018
Susan Kahn
Department of Epidemiology, Biostatistics and Occupational Health
16 shared papers, latest 2019
Maureen Meade
Department of Medicine
16 shared papers, latest 2018
James Demetrios Douketis
Department of Medicine
14 shared papers, latest 2021
David Anderson
Division of Hematology
13 shared papers, latest 2016
Jack Hirsh
Department of Medicine
11 shared papers, latest 2003
Christian Rabbat
Department of Medicine
11 shared papers, latest 2011
Alexander Graham Gri Turpie
Department of Medicine
11 shared papers, latest 2008
Diane Heels-Ansdell
Department of Health Research Methods, Evidence, and Impact
10 shared papers, latest 2018
Ted Warkentin
Department of Pathology and Molecular Medicine
9 shared papers, latest 2025
Lauren Griffith
Department of Health Research Methods, Evidence, and Impact
9 shared papers, latest 2011
Nicole Mittmann
Department of Pharmacology and Toxicology
9 shared papers, latest 2014
Jeffrey Weitz
Department of Medicine
8 shared papers, latest 2008
Marc Rodger
Department of Medicine
8 shared papers, latest 2016
John Granton
Department of Medicine
8 shared papers, latest 2016
Mark Norman Levine
Department of Oncology
7 shared papers, latest 2010
Rita Selby
Department of Laboratory Medicine & Pathobiology
7 shared papers, latest 2021
Peter Dodek
Department of Medicine
7 shared papers, latest 2015
Yoanna Skrobik
Département de médecine
4 shared papers, latest 2018
Anne McLeod
Department of Medicine
2 shared papers, latest 2017
James Waddell
Department of Surgery
2 shared papers, latest 2012
Danielle Vicus
Department of Obstetrics & Gynaecology
2 shared papers, latest 2023
Rachel Kupets
Department of Obstetrics & Gynaecology
2 shared papers, latest 2023
David Gomez
Department of Surgery
1 shared papers, latest 2016
Leodante da Costa
Department of Surgery
1 shared papers, latest 2025
Homer Tien
Department of Surgery
1 shared papers, latest 2011
Steven Hanna
Department of Surgery
1 shared papers, latest 2005
Raj Satkunasivam
Department of Surgery
1 shared papers, latest 2017
Ronald Kodama
Department of Surgery
1 shared papers, latest 2017
Pablo d'Empaire
Department of Anesthesiology and Pain Medicine
1 shared papers, latest 2025
Ferco Berger
Department of Medical Imaging
1 shared papers, latest 2025
Chirag Patel
Department of Medical Imaging
1 shared papers, latest 2025
Martin Albert
Département de médecine
1 shared papers, latest 2013
André Roussin
Département de médecine
1 shared papers, latest 2013
Daryl Fourney
Department of Surgery
1 shared papers, latest 2025
Christine Hawkes
Department of Medicine
1 shared papers, latest 2025
Gary Hunter
Department of Medicine
1 shared papers, latest 2025
Sarah Ingber
Department of Medicine
1 shared papers, latest 2009
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Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.