selected scholarly activity
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conferences
- Sa1199 Protease Inhibitors for the Prevention of Post Endoscopic Retrograde Cholangiopancreatography Pancreatitis (PEP): Cochrane Collaboration Meta-Analysis of Randomized Controlled Trials. Gastrointestinal Endoscopy. AB252-AB252. 2016
- Use of Selective Serotonin Receptor Inhibitors (SSRIs) Is Not Associated With Increased Risk of Endoscopy-Refractory Bleeding, Rebleeding or Mortality in Patients With Peptic Ulcer Bleeding. Gastroenterology. S164-S165. 2016
- 471 Optimal Timing of Endoscopy Is Associated With Lower Mortality in Peptic Ulcer Bleeding. Gastrointestinal Endoscopy. AB152-AB153. 2015
- Systematic Review and Meta-Analysis: Infliximab or Ciclosporin as Rescue Therapy in Patients with Severe Ulcerative Colitis Refractory to Steroids. Journal of Crohn's and Colitis. S313-S313. 2015
- Infliximab or Cyclosporine as Rescue Therapy in Patients With Severe Ulcerative Colitis Refractory to Steroids: A Systematic Review and Meta-Analysis. American Journal of Gastroenterology. S524-S524. 2014
- Double Guidewire Technique for the Prevention of Post-ERCP Pancreatitis (PEP): Cochrane Collaboration Meta-analysis of RCTs. American Journal of Gastroenterology. S60-S60. 2013
- Electrosurgical Current for Endoscopic Biliary Sphincterotomy (EBS) for the Prevention of Post Endoscopic Retrograde Cholangiopancreatography Pancreatitis (PEP): Cochrane Collaboration Meta-analysis of Randomized Controlled Trials. American Journal of Gastroenterology. S719-S720. 2012
- The Effect of After Hours Admission on Outcomes of Upper Gastrointestinal Bleeding. American Journal of Gastroenterology. S588-S588. 2012
- Risk of Serious (UGI) Complications With Concomitant use of Non-Selective NSAIDs and Low-Dose Aspirin: A Series of Systematic Reviews of Randomized Controlled Trials (RCT), Cohort Studies and Case Control Studies. Gastroenterology. S464-S464. 2012
- Risk of Serious Upper Gastrointestinal (UGI) Complications With Concomitant Non-Selective NSAID and Anticoagulation Therapy for at Least 4 Weeks: A Series of Systematic Reviews of Randomized Controlled Trials (RCT), Cohort Studies and Case Control Studies. Gastroenterology. S499-S499. 2012
- Risk of Serious Upper Gastrointestinal (UGI) Complications With Concomitant use of Non-Selective NSAIDs and Clopidogrel for at Least 4 Weeks: A Series of Systematic Reviews of Randomized Controlled Trials (RCT), Cohort Studies and Case Control Studies. Gastroenterology. S463-S463. 2012
- Risk of Serious Upper Gastrointestinal (UGI) Complications With use of Non-Selective (NS) NSAIDs for at Least 4 Weeks Among Patients With a History of Peptic Ulcer (PU) or PU Complications: A Series of Systematic Reviews and Meta-Analyses. Gastroenterology. S501-S501. 2012
- Risk of Serious Upper Gastrointestinal (UGI) Complications in Patients Receiving Multiple Non-Selective NSAIDs for at Least 4 Weeks: A Series of Systematic Reviews and Meta-Analyses of Randomized Controlled Trials (RCT), Cohort and Case Control Studies. Gastroenterology. S501-S501. 2012
- Risk of Serious Upper Gastrointestinal (UGI) Complications in Patients Receiving Non-Selective NSAIDs for at Least 4 Weeks: A Series of Systematic Reviews of Randomized Controlled Trials (RCT), Cohort Studies and Case Control Studies. Gastroenterology. S192-S192. 2012
- Guidewire-Assisted Cannulation of the Common Bile Duct for the Prevention of Post Endoscopic Retrograde Cholangiopancreatography Pancreatitis (PEP): Cochrane Collaboration Meta-Analysis of Randomized Controlled Trials. Gastrointestinal Endoscopy. 120-120. 2012
- Empirical Rescue Eradication Regimen for H. pylori Infection Following Two Treatment Failures: A Systematic Review and Meta-Analysis. Gastroenterology. S877-S877. 2011
- Determining the Optimum Outcome for Trials Evaluating Symptom Improvement in Functional Gastrointestinal Disorders. American Journal of Gastroenterology. S492-S493. 2010
- Effect of Comorbidity on Mortality in Patients with Peptic Ulcer Bleeding - A Systematic Review and Meta-Analysis. American Journal of Gastroenterology. S40-S40. 2010
- Does Proton Pump Inhibitor (PPI) Treatment Initiated Before Endoscopy Work in Unselected Upper Gastrointestinal Bleeding? A Cochrane Systematic Review Update. Gastroenterology. A44-A44. 2009
- Leucocyte Esterase Reagent Strips for the Diagnosis of Spontaneous Bacterial Peritonitis: A Systematic Review. American Journal of Gastroenterology. S220-S220. 2007
- Audit: Is the age limit of 55 years (NICE 2004) for endoscoping dyspeptic patients without alarm symptoms safe?. Gut. A90-A90. 2006
- Proton pump inhibitor treatment initiated prior to endoscopic diagnosis in unselected upper gastrointestinal bleeding: A cochrane systematic review and meta-analysis. Gastroenterology. A122-A122. 2006
- Use of soluble transferrin receptors is a valuable, resource-sparing tool in iron deficiency diagnosis. Gut. A94-A94. 2006
- Proton pump inhibitor (PPI) treatment for peptic ulcer (PU) bleeding: An updated cochrane collaboration (CC) meta-analysis of randomized controlled trials (RCTs). Gastroenterology. A639-A639. 2005
- Audit of the 2 week rule (TWR) for suspected upper gastrointestinal (UGI) cancer and the pathways to diagnosis. Gut. A88-A89. 2003
- Intravenous proton pump inhibitors (IV PPI) for peptic ulcer hemorrhage (PUH): Meta-analysis of randomized controlled trials (RCTs) allowing endoscopic treatment. Gastroenterology. A248-A248. 2001
- Meta-analysis analysis of medical therapies for chronic anal fissure. Gastroenterology. A408-A408. 2001
- Helicobacter pylori (HP) infection does not affect gastric emptying in patients with functional dyspepsia (FD).. Gastroenterology. A1028-A1028. 1999
- The effect of Helicobacter pylori infection on gastric emptying in patients with non-ulcer dyspepsia. Gastroenterology. A200-A200. 1998
- Study of gastric emptying in patients with non-ulcer dyspepsia evaluated by the paracetamol absorption technique: Preliminary results. Gut. A152-A153. 1997
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journal articles
- Proton pump inhibitors and oesophageal cancer: Flawed methodology and false alarms. Cancer Epidemiology. 54:137-138. 2018
- Editorial: the prevalence of Helicobacter pylori infection worldwide—knowns and unknowns. Alimentary Pharmacology and Therapeutics. 47:1330-1331. 2018
- The risk of venous thromboembolism in patients with clinically overt gastrointestinal bleeding. American Journal of Hematology. 93:E42-E45. 2018
- Response to Hsu et al.. American Journal of Gastroenterology. 113:143-143. 2018
- Fecal Immunochemical Tests in Patients at Increased Risk for Colorectal Cancer—Is It Prime Time Yet?. JAMA Internal Medicine. 177:1119-1119. 2017
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The use of selective serotonin receptor inhibitors (
SSRI s) is not associated with increased risk of endoscopy‐refractory bleeding, rebleeding or mortality in peptic ulcer bleeding. Alimentary Pharmacology and Therapeutics. 46:355-363. 2017 - Response to Georgopoulos et al.. American Journal of Gastroenterology. 112:1169-1170. 2017
- The “report card” to grade H. Pylori treatment regimens: is it achievable in realworld in areas with high clarithromycin resistance?. Journal of Gastrointestinal and Liver Diseases. 26:203-206. 2017
- Relationship between timing of endoscopy and mortality in patients with peptic ulcer bleeding: a nationwide cohort study. Gastrointestinal Endoscopy. 85:936-944.e3. 2017
- ACG Clinical Guideline: Treatment of Helicobacter pylori Infection. American Journal of Gastroenterology. 112:212-239. 2017
- Clinical Practice Guidelines for the Use of Video Capsule Endoscopy. Gastroenterology. 152:497-514. 2017
- Double-guidewire technique in difficult biliary cannulation for the prevention of post-ERCP pancreatitis: a systematic review and meta-analysis. Endoscopy. 49:15-26. 2017
- Reply. Gastroenterology. 152:303-304. 2017
- How to Interpret a Negative Study. American Journal of Gastroenterology. 111:1506-1507. 2016
- The Toronto Consensus for the Treatment of Helicobacter pylori Infection in Adults. Gastroenterology. 151:51-69.e14. 2016
- Pancreatic duct guidewire placement for biliary cannulation for the prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. Cochrane Database of Systematic Reviews. 2016:CD010571. 2016
- Systematic Review and Meta-Analysis: Infliximab or Cyclosporine as Rescue Therapy in Patients With Severe Ulcerative Colitis Refractory to Steroids. American Journal of Gastroenterology. 111:477-491. 2016
- The Toronto Consensus Statements for the Management of Inflammatory Bowel Disease in Pregnancy. Gastroenterology. 150:734-757.e1. 2016
- Helicobacter pylori eradication: gastric cancer prevention.. Clinical Evidence. 2015:0406. 2015
- American Gastroenterological Association Institute Guideline on the Role of Upper Gastrointestinal Biopsy to Evaluate Dyspepsia in the Adult Patient in the Absence of Visible Mucosal Lesions. Gastroenterology. 149:1082-1087. 2015
- American Gastroenterological Association Institute Technical Review on the Role of Upper Gastrointestinal Biopsy to Evaluate Dyspepsia in the Adult Patient in the Absence of Visible Mucosal Lesions. Gastroenterology. 149:1088-1118. 2015
- Anti-inflammatory Intervention in Depression. JAMA psychiatry. 72:512-512. 2015
- Clinical Practice Guidelines for the Medical Management of Nonhospitalized Ulcerative Colitis: The Toronto Consensus. Gastroenterology. 148:1035-1058.e3. 2015
- Response to Atreja et al.. American Journal of Gastroenterology. 110:346-347. 2015
- Proton Pump Inhibitors and Risk of Bone Fractures. Current Treatment Options in Gastroenterology. 12:414-423. 2014
- Risk of Upper Gastrointestinal Bleeding With Selective Serotonin Reuptake Inhibitors With or Without Concurrent NonSteroidal Anti-Inflammatory Use: A Systematic Review and Meta-Analysis. American Journal of Gastroenterology. 109:811-819. 2014
- Consensus Statements on the Risk, Prevention, and Treatment of Venous Thromboembolism in Inflammatory Bowel Disease: Canadian Association of Gastroenterology. Gastroenterology. 146:835-848.e6. 2014
- The Role of Endoscopic Retrograde Cholangiopancreatography in Acute Pancreatitis. American Journal of Gastroenterology. 109:443-444. 2014
- Reply to Kawakami et al.. Endoscopy. 46:164-164. 2014
- Canadian Association of Gastroenterology Policy on the Application for, and Implementation of, Clinical Practice Guidelines. Canadian Journal of Gastroenterology and Hepatology. 28:473-480. 2014
- Canadian Association of Gastroenterology Position Statement Regarding the Use of Thiopurines for the Treatment of Inflammatory Bowel Disease. Canadian Journal of Gastroenterology and Hepatology. 28:371-372. 2014
- Optimum duration of regimens forHelicobacter pylorieradication. Cochrane Database of Systematic Reviews. 12:CD008337. 2013
- Editorial : PPIs and Recurrent C. difficile Infection: No Association?. American Journal of Gastroenterology. 108:1802-1803. 2013
- Response to Nahon et al. and Marmo et al.. American Journal of Gastroenterology. 108:1534-1535. 2013
- Guide wire-assisted cannulation for the prevention of post-ERCP pancreatitis: a systematic review and meta-analysis. Endoscopy. 45:605-618. 2013
- Comparison of different regimens of proton pump inhibitors for acute peptic ulcer bleeding. Cochrane Database of Systematic Reviews. 2013:CD007999. 2013
- Effect of Comorbidity on Mortality in Patients With Peptic Ulcer Bleeding: Systematic Review and Meta-Analysis. American Journal of Gastroenterology. 108:331-345. 2013
- Canadian Association of Gastroenterology Position Statement: Hip Fracture and Proton Pump Inhibitor Therapy – a 2013 Update. Canadian Journal of Gastroenterology and Hepatology. 27:593-595. 2013
- Recent advances on the management of patients with non-variceal upper gastrointestinal bleeding.. Annals of Gastroenterology. 26:191-197. 2013
- Guidewire-assisted cannulation of the common bile duct for the prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. Cochrane Database of Systematic Reviews. 12:CD009662. 2012
- High-dose versus low-dose intravenous proton pump inhibitor treatment for bleeding peptic ulcers. Expert Review of Gastroenterology and Hepatology. 6:675-677. 2012
- Editorial: How Much Do PPIs Contribute to C. difficile Infections?. American Journal of Gastroenterology. 107:1020-1021. 2012
- Levofloxacin-Based Three-Antibiotic Regimen for H. pylori Eradication. American Journal of Gastroenterology. 107:1106-1107. 2012
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Commentary: what is the optimal
PPI dosing following endoscopic haemostasis in acute ulcer bleeding?. Alimentary Pharmacology and Therapeutics. 35:1351-1352. 2012 - Management of Patients With Nonvariceal Upper Gastrointestinal Bleeding. Clinical Gastroenterology and Hepatology. 10:234-239. 2012
- The risks of PPI therapy. Nature Reviews Gastroenterology and Hepatology. 9:132-139. 2012
- Recent Safety Concerns With Proton Pump Inhibitors. Journal of Clinical Gastroenterology. 46:93-114. 2012
- Canadian Association of Gastroenterology Consensus Guidelines on Safety and Quality Indicators in Endoscopy. Canadian Journal of Gastroenterology and Hepatology. 26:17-31. 2012
- Indicators of Safety Compromise in Gastrointestinal Endoscopy. Canadian Journal of Gastroenterology and Hepatology. 26:71-78. 2012
- PPI co‐therapy did not adversely affect outcomes in clopidogrel users. Alimentary Pharmacology and Therapeutics. 35:313-314. 2012
- Sequential therapy – more studies are still required. Alimentary Pharmacology and Therapeutics. 35:194-195. 2012
- The Interaction Between Proton Pump Inhibitors and Clopidogrel and Upper Gastrointestinal Bleeding. Gastrointestinal Endoscopy Clinics of North America. 21:637-656. 2011
- Proton Pump Inhibitors and Risk of Fracture: A Systematic Review and Meta-Analysis of Observational Studies. American Journal of Gastroenterology. 106:1209-1218. 2011
- Night-time intra-oesophageal bile and acid exposure in GERD patients failing PPI therapy. Alimentary Pharmacology and Therapeutics. 33:1068-1069. 2011
- Editor's Correspondence. JAMA Internal Medicine. 170:1695-1695. 2010
- Response to Doherty, Moss, and Cheifetz. American Journal of Gastroenterology. 105:2111-2112. 2010
- Proton pump inhibitor treatment initiated prior to endoscopic diagnosis in upper gastrointestinal bleeding. Cochrane Database of Systematic Reviews. 2010:CD005415. 2010
- Capsule Endoscopy Has a Significantly Higher Diagnostic Yield in Patients With Suspected and Established Small-Bowel Crohn's Disease: A Meta-Analysis. American Journal of Gastroenterology. 105:1240-1248. 2010
- Proton pump inhibitor treatment for acute peptic ulcer bleeding. Cochrane Database of Systematic Reviews. 2010:CD002094. 2010
- Antiplatelet therapy in patients with atherosclerotic coronary artery disease undergoing elective endoscopic gastrointestinal procedures. Key messages for clinical practice. Polskie Archiwum Medycyny Wewnetrznej. 120:143-147. 2010
- Systematic Review of the Symptom Burden, Quality of Life Impairment and Costs Associated with Peptic Ulcer Disease. American Journal of Medicine. 123:358-366.e2. 2010
- Helicobacter pylori infection.. American Family Physician. 2009:0406. 2009
- The Role of Proton Pump Inhibitors in the Management of Upper Gastrointestinal Bleeding. Gastroenterology Clinics of North America. 38:199-213. 2009
- Systematic reviews of the clinical effectiveness and cost-effectiveness of proton pump inhibitors in acute upper gastrointestinal bleeding. Health Technology Assessment. 11:iii-164. 2007
- Systematic reviews of the clinical effectiveness and cost-effectiveness of proton pump inhibitors in acute upper gastrointestinal bleeding. Health Technology Assessment. 11:1-+. 2007
- Pharmacologic treatment of peptic ulcer bleeding. Current Treatment Options in Gastroenterology. 10:134-142. 2007
- 3-hour postprandial pH monitoring study correlation with endoscopy in gastroesophageal reflux disease.. Journal of the College of Physicians and Surgeons--Pakistan : JCPSP. 17:180-181. 2007
- Proton Pump Inhibitor Therapy for Peptic Ulcer Bleeding: Cochrane Collaboration Meta-analysis of Randomized Controlled Trials. Mayo Clinic proceedings. 82:286-296. 2007
- Proton pump inhibitors in acute non‐variceal upper gastrointestinal bleeding. Journal of Gastroenterology and Hepatology. 21:1763-1765. 2006
- Proton pump inhibitor treatment initiated prior to endoscopic diagnosis in upper gastrointestinal bleeding. Clinical Respiratory Journal. CD005415. 2006
- To establish the efficacy of PPI therapy for ulcer bleeding in the United States, do we need more patients or more PPI? (vol 101, pg 2000, 2006). American Journal of Gastroenterology. 101:2445-2445. 2006
- To Establish the Efficacy of PPI Therapy for Ulcer Bleeding in the United States, Do We Need More Patients or More PPIs?. American Journal of Gastroenterology. 101:2000-2002. 2006
- Some Observations on PPI Therapy for Bleeding Ulcer.. Gastroenterology and Hepatology. 2:571-577. 2006
- A Meta-Analysis of the Yield of Capsule Endoscopy Compared to Other Diagnostic Modalities in Patients with Non-Stricturing Small Bowel Crohn's Disease. American Journal of Gastroenterology. 101:954-964. 2006
- Idiopathic portal hypertension complicating systemic sclerosis: a case report. BMC Gastroenterology. 5:16. 2005
- Infliximab for treatment of pyoderma gangrenosum associated with clinically inactive Crohn's disease. A case report.. Journal of Gastrointestinal and Liver Diseases. 14:401-403. 2005
- A Meta-Analysis of the Yield of Capsule Endoscopy Compared to Other Diagnostic Modalities in Patients with Obscure Gastrointestinal Bleeding. American Journal of Gastroenterology. 100:2407-2418. 2005
- Explaining Divergent Results of Meta-Analyses on Proton Pump Inhibitor Treatment for Ulcer Bleeding. Gastroenterology. 129:1804-1805. 2005
- Proton‐pump inhibitor for peptic ulcer bleeding: Authors’ reply. Alimentary Pharmacology and Therapeutics. 22:892-892. 2005
- Systematic review and meta‐analysis: proton‐pump inhibitor treatment for ulcer bleeding reduces transfusion requirements and hospital stay – results from the Cochrane Collaboration. Alimentary Pharmacology and Therapeutics. 22:169-174. 2005
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Systematic review and meta‐analysis: enhanced efficacy of proton‐pump inhibitor therapy for peptic ulcer bleeding in Asia – a
post hoc analysis from the Cochrane Collaboration. Alimentary Pharmacology and Therapeutics. 21:1055-1061. 2005 - Systematic review and meta-analysis of proton pump inhibitor therapy in peptic ulcer bleeding. The BMJ. 330:568-568. 2005
- Who???s Afraid of the Big Bad GERD?. Journal of Clinical Gastroenterology. 38:731-732. 2004
- Effects ofHelicobacter pyloriinfection on gastric emptying rate in patients with non-ulcer dyspepsia. World Journal of Gastroenterology. 10:1750-1750. 2004
- Helicobacter pylori in gastro-oesophageal reflux disease needs comparator. The BMJ. 326:1460-1460. 2003
- Non–Gastrointestinal Tract Associations of Helicobacter pylori Infection. JAMA Internal Medicine. 159:925-925. 1999