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Peter Church

TitleStaff Physician
InstitutionThe Hospital for Sick Children
DepartmentGastroenterology, Hepatology and Nutrition
Address555 University Avenue
Toronto ON M5G 1X8
Phone416-813-1500
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    Collapse Biography 
    Collapse education and training
    University of Toronto, TorontoMSc2015Clinical Epidemiology
    University of Toronto, Toronto2015Clinician Investigator Program
    University of Toronto, Toronto2013Pediatric Gastroenterology
    Memorial University of Newfoundland, St. John'sRCPSC2010Pediatrics
    Memorial University of Newfoundland, St. John'sMD2006Medicine
    University of New Brunswick, FrederictonBSc2002Biology/Chemistry

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Ricciuto A, Mack DR, Huynh HQ, Jacobson K, Otley AR, deBruyn J, El-Matary W, Deslandres C, Sherlock ME, Critch JN, Bax K, Jantchou P, Seidman EG, Carman N, Rashid M, Muise A, Wine E, Carroll MW, Lawrence S, Van Limbergen J, Benchimol EI, Walters TD, Griffiths AM, Church PC. Diagnostic Delay Is Associated with Complicated Disease and Growth Impairment in Paediatric Crohn's Disease. J Crohns Colitis. 2020 Sep 26. PMID: 32978629.
      View in: PubMed
    2. Rinawi F, Ricciuto A, Church PC, Frost K, Crowley E, Walters TD, Griffiths AM. Association of Early Postinduction Adalimumab Exposure With Subsequent Clinical and Biomarker Remission in Children with Crohn's Disease. Inflamm Bowel Dis. 2020 Sep 26. PMID: 32978946.
      View in: PubMed
    3. Dhaliwal J, Erdman L, Drysdal E, Rinawi F, Muir J, Walters TD, Siddiqui I, Griffiths AM, Church PC. Accurate classification of pediatric colonic IBD subtype using a random forest machine learning classifier. J Pediatr Gastroenterol Nutr. 2020 Sep 25. PMID: 33003163.
      View in: PubMed
    4. Murphy LK, Rights JD, Ricciuto A, Church PC, Ahola Kohut S. Biopsychosocial Correlates of Presence and Intensity of Pain in Adolescents With Inflammatory Bowel Disease. Front Pediatr. 2020; 8:559. PMID: 33014942.
      View in: PubMed
    5. Dhaliwal J, Martincevic I, Williams B, Frost K, Uusoue K, Arpino V, Church P, Walters TD, Griffiths AM, Mouzaki M. Body Composition Using Air Displacement Plethysmography in Children With Inflammatory Bowel Disease. J Pediatr Gastroenterol Nutr. 2020 07; 71(1):52-58. PMID: 32141991.
      View in: PubMed
    6. Sandy NS, Church PC, Gonska T. An infant with acute onset of non-bilious emesis. Gastroenterology. 2020 Jun 04. PMID: 32505741.
      View in: PubMed
    7. Dhaliwal J, Walters TD, Mack DR, Huynh HQ, Jacobson K, Otley AR, Debruyn J, El-Matary W, Deslandres C, Sherlock ME, Critch JN, Bax K, Seidman E, Jantchou P, Ricciuto A, Rashid M, Muise AM, Wine E, Carroll M, Lawrence S, Van Limbergen J, Benchimol EI, Church P, Griffiths AM. Phenotypic Variation in Paediatric Inflammatory Bowel Disease by Age: A Multicentre Prospective Inception Cohort Study of the Canadian Children IBD Network. J Crohns Colitis. 2020 May 21; 14(4):445-454. PMID: 31136648.
      View in: PubMed
    8. Piercy J, Stinson J, Church PC, Walters TD, Frost K, Ahola Kohut S. Trait Perfectionism and Psychosocial Outcomes in Adolescents With Inflammatory Bowel Disease. J Pediatr Gastroenterol Nutr. 2020 03; 70(3):318-323. PMID: 31821232.
      View in: PubMed
    9. Crowley E, Warner N, Pan J, Khalouei S, Elkadri A, Fiedler K, Foong J, Turinsky AL, Bronte-Tinkew D, Zhang S, Hu J, Tian D, Li D, Horowitz J, Siddiqui I, Upton J, Roifman CM, Church PC, Wall DA, Ramani AK, Kotlarz D, Klein C, Uhlig H, Snapper SB, Gonzaga-Jauregui C, Paterson AD, McGovern DPB, Brudno M, Walters TD, Griffiths AM, Muise AM. Prevalence and Clinical Features of Inflammatory Bowel Diseases Associated With Monogenic Variants, Identified by Whole-Exome Sequencing in 1000 Children at a Single Center. Gastroenterology. 2020 Jun; 158(8):2208-2220. PMID: 32084423.
      View in: PubMed
    10. Dhaliwal J, Siddiqui I, Muir J, Rinawi F, Church PC, Walters TD, Griffiths AM. Differentiation of Colonic Inflammatory Bowel Disease: Re-examination of Paediatric Inflammatory Bowel Disease Classes Algorithm With Resected Colon As the Criterion Standard. J Pediatr Gastroenterol Nutr. 2020 02; 70(2):218-224. PMID: 31978020.
      View in: PubMed
    11. Patil K, Ricciuto A, Alsharief A, Al-Rayahi J, Amirabadi A, Church PC, Kamath BM, Greer MC. Magnetic Resonance Cholangiopancreatography Severity Predicts Disease Outcomes in Pediatric Primary Sclerosing Cholangitis: A Reliability and Validity Study. Hepatol Commun. 2020 Feb; 4(2):208-218. PMID: 32025606.
      View in: PubMed
    12. Dhaliwal J, Siddiqui I, Muir J, Rinawi F, Church PC, Walters TD, Griffiths AM. Differentiation of Colonic IBD: Re-examination of PIBD Classes Algorithm With Resected Colon As Gold Standard. J Pediatr Gastroenterol Nutr. 2019 Oct 29. PMID: 31688700.
      View in: PubMed
    13. Ricciuto A, Hansen BE, Ngo B, Aloi M, Walters TD, Church PC, Mazurek A, Khan M, Carman N, Siddiqui I, Nguyen GC, Kamath BM, Griffiths AM. Primary Sclerosing Cholangitis in Children With Inflammatory Bowel Diseases Is Associated With Milder Clinical Activity But More Frequent Subclinical Inflammation and Growth Impairment. Clin Gastroenterol Hepatol. 2020 Jun; 18(7):1509-1517.e7. PMID: 31493578.
      View in: PubMed
    14. Church PC, Ho S, Sharma A, Tomalty D, Frost K, Muise A, Walters TD, Griffiths AM. Intensified Infliximab Induction is Associated with Improved Response and Decreased Colectomy in Steroid-Refractory Paediatric Ulcerative Colitis. J Crohns Colitis. 2019 Aug 14; 13(8):982-989. PMID: 30715240.
      View in: PubMed
    15. Mack DR, Benchimol EI, Critch J, deBruyn J, Tse F, Moayyedi P, Church P, Deslandres C, El-Matary W, Huynh H, Jantchou P, Lawrence S, Otley A, Sherlock M, Walters T, Kappelman MD, Sadowski D, Marshall JK, Griffiths A. Canadian Association of Gastroenterology Clinical Practice Guideline for the Medical Management of Pediatric Luminal Crohn's Disease. Gastroenterology. 2019 08; 157(2):320-348. PMID: 31320109.
      View in: PubMed
    16. El-Matary W, Walters TD, Huynh HQ, deBruyn J, Mack DR, Jacobson K, Sherlock ME, Church P, Wine E, Carroll MW, Benchimol EI, Lawrence S, Griffiths AM. Higher Postinduction Infliximab Serum Trough Levels Are Associated With Healing of Fistulizing Perianal Crohn's Disease in Children. Inflamm Bowel Dis. 2019 01 01; 25(1):150-155. PMID: 29912413.
      View in: PubMed
    17. Ricciuto A, Dhaliwal J, Walters TD, Griffiths AM, Church PC. Clinical Outcomes With Therapeutic Drug Monitoring in Inflammatory Bowel Disease: A Systematic Review With Meta-Analysis. J Crohns Colitis. 2018 Nov 15; 12(11):1302-1315. PMID: 30107416.
      View in: PubMed
    18. Carman N, Tomalty D, Church PC, Mack DR, Benchimol EI, Otley AR, Jacobson K, Huynh HQ, DeBruyn JC, El-Matary W, Sherlock M, Van Limbergen J, Griffiths AM, Walters TD. Clinical disease activity and endoscopic severity correlate poorly in children newly diagnosed with Crohn's disease. Gastrointest Endosc. 2019 02; 89(2):364-372. PMID: 30273592.
      View in: PubMed
    19. Ledder O, Church P, Cytter-Kuint R, Martínez-León M, Sladek M, Coppenrath E, Weiss B, Yerushalmi B, Martin de Carpi J, Duchano L, Towbin A, Assa A, Shaoul R, Mearin ML, Alex G, Griffiths A, Turner D. A Simple Endoscopic Score Modified for the Upper Gastrointestinal Tract in Crohn's Disease [UGI-SES-CD]: A Report From the ImageKids Study. J Crohns Colitis. 2018 Aug 29; 12(9):1073-1078. PMID: 29800422.
      View in: PubMed
    20. Mack DR, Benchimol EI, Critch J, deBruyn J, Tse F, Moayyedi P, Church P, Deslandres C, El-Matary W, Huynh H, Jantchou P, Lawrence S, Otley A, Sherlock M, Walters T, Kappelman MD, Sadowski D, Marshall JK, Griffiths A. Canadian Association of Gastroenterology Clinical Practice Guideline for the Medical Management of Pediatric Luminal Crohn's Disease. J Can Assoc Gastroenterol. 2019 Aug; 2(3):e35-e63. PMID: 31294379.
      View in: PubMed
    21. Church PC, Kuint RC, Ledder O, Navas-López VM, Sladek M, Brückner A, Baldassano RN, Weiss B, Yerushalmi B, Saeed SA, Hyams J, Otley A, Griffiths AM, Turner D, Greer MC. Magnetic Resonance Enterography Cannot Replace Upper Endoscopy in Pediatric Crohn Disease: An Imagekids Sub-study. J Pediatr Gastroenterol Nutr. 2018 07; 67(1):53-58. PMID: 29287012.
      View in: PubMed
    22. Church PC, Hyams J, Ruemmele F, de Ridder L, Turner D, Griffiths AM. The Continental Divide: Anti-TNF Use in Pediatric IBD Is Different in North America Compared to Other Parts of the World. Can J Gastroenterol Hepatol. 2018; 2018:3190548. PMID: 30009157.
      View in: PubMed
    23. Ricciuto A, Fish J, Carman N, Walters TD, Church PC, Hansen BE, Crowley E, Siddiqui I, Nguyen GC, Kamath BM, Griffiths AM. Symptoms Do Not Correlate With Findings From Colonoscopy in Children With Inflammatory Bowel Disease and Primary Sclerosing Cholangitis. Clin Gastroenterol Hepatol. 2018 07; 16(7):1098-1105.e1. PMID: 29378308.
      View in: PubMed
    24. Weinstein-Nakar I, Focht G, Church P, Walters TD, Abitbol G, Anupindi S, Berteloot L, Hulst JM, Ruemmele F, Lemberg DA, Leach ST, Cytter R, Greer ML, Griffiths AM, Turner D. Associations Among Mucosal and Transmural Healing and Fecal Level of Calprotectin in Children With Crohn's Disease. Clin Gastroenterol Hepatol. 2018 07; 16(7):1089-1097.e4. PMID: 29501599.
      View in: PubMed
    25. Lam CKL, Church PC, Haliburton B, Chambers K, Martincevic I, Vresk L, Courtney-Martin G, Bandsma R, Avitzur Y, Wales PC, Mouzaki M. Long-term Exposure of Children to a Mixed Lipid Emulsion Is Less Hepatotoxic Than Soybean-based Lipid Emulsion. J Pediatr Gastroenterol Nutr. 2018 03; 66(3):501-504. PMID: 29470321.
      View in: PubMed
    26. Ricciuto A, Kamath BM, Walters TD, Frost K, Carman N, Church PC, Ling SC, Griffiths AM. New Onset Autoimmune Hepatitis during Anti-Tumor Necrosis Factor-Alpha Treatment in Children. J Pediatr. 2018 03; 194:128-135.e1. PMID: 29274889.
      View in: PubMed
    27. AlSabban Z, Carman N, Moineddin R, Lo RT, King SK, Langer JC, Walters TD, Griffiths AM, Church PC, Greer MC. Can MR enterography screen for perianal disease in pediatric inflammatory bowel disease? J Magn Reson Imaging. 2018 06; 47(6):1638-1645. PMID: 29135086.
      View in: PubMed
    28. Ricciuto A, Fish JR, Tomalty DE, Carman N, Crowley E, Popalis C, Muise A, Walters TD, Griffiths AM, Church PC. Diagnostic delay in Canadian children with inflammatory bowel disease is more common in Crohn's disease and associated with decreased height. Arch Dis Child. 2018 04; 103(4):319-326. PMID: 28794097.
      View in: PubMed
    29. El-Matary W, Benchimol EI, Mack D, Huynh HQ, Critch J, Otley A, Deslandres C, Jacobson K, deBruyn J, Carroll MW, Wine E, Van Limbergen J, Sherlock M, Bax K, Lawrence S, Seidman E, Issenman R, Walters TD, Church P, Griffiths AM. Allied Health Professional Support in Pediatric Inflammatory Bowel Disease: A Survey from the Canadian Children Inflammatory Bowel Disease Network-A Joint Partnership of CIHR and the CH.I.L.D. Foundation. Can J Gastroenterol Hepatol. 2017; 2017:3676474. PMID: 28593172.
      View in: PubMed
    30. Church PC, Greer MC, Cytter-Kuint R, Doria AS, Griffiths AM, Turner D, Walters TD, Feldman BM. Magnetic resonance enterography has good inter-rater agreement and diagnostic accuracy for detecting inflammation in pediatric Crohn disease. Pediatr Radiol. 2017 May; 47(5):565-575. PMID: 28283726.
      View in: PubMed
    31. AlSabban Z, Church P, Moineddin R, Navarro OM, Greer ML, Walters T, Chavhan GB. Accuracy and interobserver agreement of diffusion-weighted imaging in pediatric inflammatory bowel disease. Clin Imaging. 2017 Jan - Feb; 41:14-22. PMID: 27721092.
      View in: PubMed
    32. Al Nasser Y, Moura MC, Mertens L, McCrindle BW, Parekh RS, Ng VL, Church PC, Mouzaki M. Subclinical cardiovascular changes in pediatric solid organ transplant recipients: A systematic review and meta-analysis. Pediatr Transplant. 2016 Jun; 20(4):530-9. PMID: 26890272.
      View in: PubMed
    33. Ricciuto A, Walsh CM, Church PC. An Unexpected Cause of Upper Gastrointestinal Bleeding in a Child. Clin Gastroenterol Hepatol. 2015 Aug; 13(8):A29-30. PMID: 25916186.
      View in: PubMed
    34. Church PC, Turner D, Feldman BM, Walters TD, Greer ML, Amitai MM, Griffiths AM. Systematic review with meta-analysis: magnetic resonance enterography signs for the detection of inflammation and intestinal damage in Crohn's disease. Aliment Pharmacol Ther. 2015 Jan; 41(2):153-66. PMID: 25403954.
      View in: PubMed
    35. Church PC, Guan J, Walters TD, Frost K, Assa A, Muise AM, Griffiths AM. Infliximab maintains durable response and facilitates catch-up growth in luminal pediatric Crohn's disease. Inflamm Bowel Dis. 2014 Jul; 20(7):1177-86. PMID: 24865777.
      View in: PubMed
    36. Mouzaki M, Church P. Lactose avoidance shortens symptom duration for young children with acute diarrhoea. Evid Based Med. 2014 Jun; 19(3):106. PMID: 24499702.
      View in: PubMed
    37. Valentino PL, Church PC, Shah PS, Beyene J, Griffiths AM, Feldman BM, Kamath BM. Hepatotoxicity caused by methotrexate therapy in children with inflammatory bowel disease: a systematic review and meta-analysis. Inflamm Bowel Dis. 2014 Jan; 20(1):47-59. PMID: 24280876.
      View in: PubMed
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