Following is a list of our research publications. Should you need more information, and/or you would like to receive full copy(s) of any of these scientific publications, please contact us here via email, or refer to our contact page.


  • Total Surface Area Influences Stone Free Outcomes in Shock Wave Lithotripsy for Distal Ureteral Calculi. Scotland KB, Safaee Ardekani G, Chan JYH, Paterson RF, Chew BH. J Endourol. 2019 Aug;33(8):661-666. PMID: 30860394
  • Use of the Quick Sequential Organ Failure Assessment Score for Prediction of Intensive Care Unit Admission Due to Septic Shock after Percutaneous Nephrolithotomy: A Multicenter Study. Yaghoubian A, Batter T, Mozafarpour S, Sacco D, Chew BH, Monga M, Krambeck A, Sur R, Knudsen B, Mikkilineni N, Shah O, Stern K, De S, Miller N, Broutian T, Sourial M, Large T, Scotland K, Lundeen C, Lange D, DiPina T, Bechis SK, Eisner BH; Edge Research Consortium.
    J Urol. 2019 Aug;202(2):314-318. PMID: 30829131
  • The New/Novel Oral Anticoagulants and Their Impact on Patients Being Considered for Shockwave Lithotripsy: The Findings of an International Survey of the Endourological Society.
    Alathel A, Bjazevic J, Chew BH, Pace KT, Razvi H.
    J Endourol. 2019 Apr;33(4):319-324 PMID: 30793937
  • Lundeen CJ, Forbes CM, Wong VKF, Lange D, Chew BH.
    Curr Opin Urol. 2019 Dec 10. doi: Ureteral stents: the good the bad and the ugly..
    PMID: 31834083
  • Chew BH, Chan J, Choy D, Hirayama T, Iwamura M, Branda N, Lange D. The Interaction of Urinary Components with Biomaterials in the Urinary Tract: Ureteral Stent Discolouration.J Endourol. 2019 Nov 6. PMID: 31691581
  • Forbes C, Scotland KB, Lange D, Chew BH. Innovations in Ureteral Stent Technology. Urol Clin North Am. 2019 May;46(2):245-255. doi: 10.1016/j.ucl.2018.12.013. Epub 2019 Mar 4. Review. PMID: 30961857
  • Single-Use Flexible Ureteroscopes: How Do They Compare with Reusable Ureteroscopes? Scotland KB, Chan JYH, Chew BH.
    J Endourol. 2019 Feb;33(2):71-78.PMID: 30612446
  • Use of the Quick Sequential Organ Failure Assessment Score for Prediction of Intensive Care Unit Admission Due to Septic Shock after Percutaneous Nephrolithotomy: A Multicenter Study.Yaghoubian A, Batter T, Mozafarpour S, Sacco D, Chew BH, Monga M, Krambeck A, Sur R, Knudsen B, Mikkilineni N, Shah O, Stern K, De S, Miller N, Broutian T, Sourial M, Large T, Scotland K, Lundeen C, Lange D, DiPina T, Bechis SK, Eisner BH; Edge Research Consortium. J Urol. 2019 Aug;202(2):314-318. PMID: 30829131
  • The effect of travel distance on health-related quality of life for patients with nephrolithiasis. Narang GL, Wiener LE, Penniston KL, Antonelli JA, Averch TD, Sivalingam S, Chew BH, Bird VG, Pais VM Jr, Sur RL, Chi T, Streeper NM, Nakada SY, Koch GG, Viprakasit DP. Can Urol Assoc J. 2019 Nov 5. PMID: 31702546
  • Editorial Comment on: Single-Use Versus Reusable Digital Flexible Ureteroscopes for the Treatment of Renal Calculi: A Prospective Multicenter Randomized Controlled Trial by Qi et al. (From: Qi S, Yang E, Bao J, et al. J Endourol 2019 [Epub ahead of print]; Chew BH. J Endourol. 2019 Nov 4. PMID: 31595780
  • Introduction of an ex-vivo pig model for teaching percutaneous nephrolithotomy access techniques. Forbes CM, Lim J, Chan J, Paterson RF, Gupta M, Chew BH, Scotland K. Can Urol Assoc J. 2019 Oct;13(10):355-360. PMID: 31364971
  • Hybrid guidewires: Analysis and comparison of the mechanical properties and safety profiles. Hinck BD, Emmott AS, Omar M, Tarplin S, Chew BH, Monga M. Can Urol Assoc J. 2019 Feb;13(2):59-63. PMID: 30138100
  • Association of Patient Age and Gender with Kidney Stone Related Quality of Life. Stern KL, Gao T, Antonelli JA, Viprakasit DP, Averch TD, Chi T, Chew BH, Bird VG, Pais VM Jr, Streeper NM, Sur RL, Nakada SY, Penniston KL, Sivalingam S.
    J Urol. 2019 Aug;202(2):309-313. PMID: 31026215
  • Low Income and Nonwhite Race are Strongly Associated with Worse Quality of Life in Patients with Nephrolithiasis.
    Ahmad TR, Tzou DT, Usawachintachit M, Reliford-Titus S, Wu C, Goodman J, Antonelli JA, Viprakasit DP, Averch TD, Sivalingam S, Chew BH, Bird VG, Pais VM Jr, Streeper NM, Sur RL, Nakada SY, Penniston KL, Chi T. J Urol. 2019 Jul;202(1):119-124. PMID: 30865567


  • A Randomized Controlled Trial of Preoperative Prophylactic Antibiotics Prior to Percutaneous Nephrolithotomy in a Low Infectious Risk Population: A Report from the EDGE Consortium.
    Chew BH, Miller NL, Abbott JE, Lange D, Humphreys MR, Pais VM Jr, Monga M, Krambeck AE, Sur RL. J Urol. 2018 Oct;200(4):801-808. PMID: 29684391
  • Metabolic evaluation guidelines in patients with nephrolithiasis: Are they being followed? Results of a national, multi-institutional, quality-assessment study. Harmouch SS, Abou-Haidar H, Elhawary H, Grgic T, Lantz AG, Lee JY, Chew BH, Andonian S, Bhojani  N. Can Urol Assoc J. 2018 Oct;12(10):313-318.
    PMID: 29989917
  • Complications, Re-Intervention Rates, and Natural History of Residual Stone Fragments After Percutaneous Nephrolithotomy.
    Emmott AS, Brotherhood HL, Paterson RF, Lange D, Chew BH.
    J Endourol. 2018 Jan;32(1):28-32. PMID: 29037066
  • Evaluating factors that dictate struvite stone composition: A multi-institutional clinical experience from the EDGE Research Consortium. Flannigan RK, Battison A, De S, Humphreys MR, Bader M, Lellig E, Monga M, Chew BH, Lange D.
    Can Urol Assoc J. 2018 Apr;12(4):131-136. PMID: 29319486
  • Ureteroscopic Laser Lithotripsy: A Review of Dusting vs Fragmentation with Extraction. Matlaga BR, Chew B, Eisner B, Humphreys M, Knudsen B, Krambeck A, Lange D, Lipkin M, Miller NL, Monga M, Pais V, Sur RL, Shah O. J Endourol. 2018 Jan;32(1):1-6. PMID: 29061070
  • Conversion from Cystine to Noncystine Stones: Incidence and Associated Factors. Reinstatler L, Stern K, Batter H, Scotland KB, Ardekani GS, Rivera M, Chew BH, Eisner B, Krambeck AE, Monga M, Pais VM Jr.J Urol. 2018 Dec;200(6):1285-1289. Epub 2018 Jul 27. Erratum in: J Urol. 2019 Mar;201(3):629.
  • The Effect of Thiazide and Potassium Citrate Use on the Health Related Quality of Life of Patients with Urolithiasis.
    Raffin EP, Penniston KL, Antonelli JA, Viprakasit DP, Averch TD, Bird VG, Chew BH, Sivalingam S, Sur RL, Nakada SY, Pais VM Jr.
    J Urol. 2018 Dec;200(6):1290-1294. PMID: 29913138



  • The Role of Bacteria in Urology – Editors Dr. Dirk Lange and Dr. Ben Chew
  • click here to preview chapters or to buy the book!

Peer-Reviewed Publications


  • Kymora B. Scotland, Tadeusz Kroczak, Kenneth T. Pace, Ben H. Chew: Stone technology: intracorporeal lithotripters. click here to read the full paper!


  • Tran H, Arsovska O, Paterson RF, Chew BH. Evaluation of risk factors and treatment options in patients with ureteral stricture disease at a single institution. Canadian Urological Association Journal. 2015 Dec 14;9(11-12):921-4.
  • Wong A, Lange D, Houle S, Arbatsky NP, Valvano MA, Knirel YA, Dozois CM, Creuzenet C. Role of capsular modified heptose in the virulence of Campylobacter jejuni. Molecular microbiology. 2015 June; 96 (6): 1136–1158
  • Dirk Lange, Nathan Hoag, Samir Bidnur & Ben H. Chew. “Ureteral Stent-Associated Complications: Where We Are And Where We Are Going.” Nature Reviews Urology. 2015 Jan;12(1):17-25.
  • Joey Lo & Dirk Lange. “Current and Potential Applications of Host-defense Peptides in Urology. BioMed Research International. 2015: 1-9.


  • Janssen C, Lo J, Jäger W, Moskalev I, Law A, Chew BH, Lange D. A high throughput, minimally invasive, ultrasound guided model for the study of catheter associated urinary tract infections and device encrustation in mice. J Urol. 2014 Dec;192(6):1856-63. doi: 10.1016/j.juro.2014.05.092. PMID: 24866596.
  • Joey Lo, Dirk Lange and Ben H. Chew. Ureteral Stents and Foley Catheters-Associated Urinary Tract Infections: The Role of Coatings and Materials in Infection Prevention Antibiotics 2014, 3(1), 87-97; doi:3390/antibiotics3010087.
  • Shenoi RA, Kalathottukaren MT, Travers RJ, Lai BF, Creagh AL, Lange D, Yu K, Weinhart M, Chew BH, Du C, Brooks DE, Carter CJ, Morrissey JH, Haynes CA, Kizhakkedathu JN. Affinity-based design of a synthetic universal reversal agent for heparin anticoagulants. Sci Transl Med. 2014 Oct 29;6(260):260ra150. doi: 10.1126/scitranslmed.3009427. PMID: 25355700.
  • Brotherhood H, Lange D, Chew BHAdvances in ureteral stents. Transl Androl Urol 2014 Jun 20. doi: 10.3978/j.issn.2223-4683.2014.06.06.
  • Ryan Flannigan, Wei Ho Choy, Ben H. Chew, Dirk Lange. “Renal Struvite Stones – Pathogenesis, Microbiology, and Management Strategies.” Nature Reviews Urology, 2014 June. 11(6): 333-41
  • Pais V, Chew B, Shah O, Hyams ES, Matlaga B, Venkatesh R, Page J, Paterson RF, Arsovska O, Kurtz M, Eisner BH. Percutaneous nephrolithotomy for removal of encrusted ureteral stents: a multicenter study. J Endourol. 2014 Apr 18. PMID: 24745371.


  • Patel ND, Chew B, Knudsen BE, Lipkin ME, Wenzler D, Sur RL. Accuracy of Endoscopic Intraoperative Assessment of Urologic Stone Size. J Endourol. 2013 Dec 16 PMID: 24341294.
  • Chew BH, Zavaglia B, Paterson RF, Teichman JM, Lange D, Zappavigna C, Matlaga BR, Nunez-Nateras R, Bruhn A, Altamar HO, Humphreys MR, Shah O, Miller NL. A multicenter comparison of the safety and effectiveness of ureteroscopic laser lithotripsy in obese and normal weight patients. J Endourol. 2013 Jun;27(6):710-4. PMID: 23521213.
  • Chew BH, Paterson RF, Clinkscales KW, Levine BS, Shalaby SW, Lange D. In vivo evaluation of the third generation biodegradable Uriprene™ stent: a novel approach to avoiding the forgotten stent syndrome. J Urol. 2013 Feb;189(2):719-25. PMID: 22982432.
  • Elwood CN, Lo J, Chou E, Crowe A, Arsovska O, Adomat H, Miyaoka R, Tomlinson-Guns E, Monga M, Chew BH, Lange D. Understanding urinary conditioning film components on ureteral stents: profiling protein components and evaluating their role in bacterial colonization. Biofouling. 2013;29(9):1115-22. PMID: 24047458.


  • Claudia Janssen, Dirk Lange, Ben H. Chew. “Ureteral Stents – Future Developments”. Brit J Med Surg Urol (2012 Dec). 5 (1) :S11-17
  • Mendez-Probst CE, Goneau LW, Macdonald KW, Nott L, Seney S, Elwood CN, Lange D, Chew BH, Denstedt JD, Cadieux PA. The use of triclosan eluting stents effectively reduces ureteral stent symptoms: a prospective randomized trial. BJU Int. 2012 Sep;110(5): 749-54.PMID: 22313688.
  • Sea J, Jonat LM, Chew BH, Qiu J, Wang B, Hoopman J, Milner T, Teichman JM. Optimal power settings for Holmium:YAG lithotripsy. J Urol. 2012 Mar;187(3):914-9. PMID: 22264464.


  • Chew BH, Arsovska O, Lange D, Wright JE, Beiko DT, Ghiculete D, Honey JR, Pace KT, Paterson RF. The Canadian StoneBreaker Trial: A Randomized, Multicenter Trial Comparing the LMA StoneBreaker™ and the Swiss LithoClast(®) During Percutaneous Nephrolithotripsy. J Endourol. 2011 Sep;25(9):1415-9. PMID: 21711137.
  • Chew BH, Paterson RF, Ferlic EA, Humphreys MR, Gershman B, Eisner BH. Case presentation. J Endourol. 2011 Jul;25(7):1105-9. PMID: 21711133.
  • Gao G, Lange D, Hilpert K, Kindrachuk J, Zou Y, Cheng JT, Kazemzadeh-Narbat M, Yu K, Wang R, Straus SK, Brooks DE, Chew BH, Hancock RE, Kizhakkedathu JN. The biocompatibility and biofilm resistance of implant coatings based on hydrophilic polymer brushes conjugated with antimicrobial peptides. Biomaterials. 2011 Jun;32(16):3899-909. PMID: 21377727.
  • Lange D, Hoag NA, Poh BK, Chew BH. Drainage Characteristics of the 3F MicroStent Using a Novel Film Occlusion Anchoring Mechanism. J Endourol. 2011 Jun;25(6):1051-6. Epub 2011 May 13.PMID: 2156869.
  • Samarasekera D, Chew BH. Endopyelotomy still has an important role in the management of ureteropelvic junction obstruction. Can Urol Assoc J. 2011 Apr;5(2):134-6. PMID: 21470541.
  • Semins MJ, Bartik L, Chew BH, Hyams ES, Humphreys M, Miller NL, Shah O, Paterson RF, Matlaga BR. Multicenter Analysis of Postoperative CT Findings After Percutaneous Nephrolithotomy: Defining Complication Rates. Urology. 2011 Jan 24. 78(2):291-4. PMID: 21269663.
  • Ben H. Chew, Bogard Zavaglia, Christine Sutton, Robin K. Masson, Siu Him Chan, Reza Hamidizadeh, Justin K. Lee, Olga Arsovska, Victor A. Rowley, Charles Zwirewich, Kourosh Afshar, Ryan F. Paterson. 20-year Prevalence of Diabetes Mellitus and Hypertension in Patients receiving Shockwave Lithotripsy for Urolithiasis. BJU Int. 2011 109(3):444-9.PMID: 21635683.


  • Krambeck AE, Miller NL, Humphreys MR, Nakada SY, Denstedt JD, Razvi H, Preminger GM, Nadler RB, Matlaga BR, Paterson RF, Chew BH, Munch LC, Handa SE, Lingeman JE. Randomized controlled, multicentre clinical trial comparing a dual-probe ultrasonic lithotrite with a single-probe lithotrite for percutaneous nephrolithotomy. BJU Int. 2011 Mar;107(5):824-8. doi: 10.1111/j.1464-410X.2010.09567.x. Epub 2010 Sep 21. PMID: 21355982.
  • Chew BH, Lange D, Paterson RF, Hendlin K, Monga M, Clinkscales KW, Shalaby SW, Hadaschik BA. Next generation biodegradable ureteral stent in a yucatan pig model. J Urol. 2010 Feb;183(2):765-71. PMID: 20022028.


  • Dirk Lange, Christopher Zappavigna, Reza Hamidizadeh, Larry Goldenberg, Ryan F. Paterson & Ben H. Chew. Bacterial Urosepsis Following TRUS Biopsy, Urology. 2009 Dec;74(6):1200-5. PMID: 19815258.
  • Elwood CNLange D, Nadeau R, Seney S, Summers K, Chew BH, Denstedt JD, Cadieux PA.Novel in vitro model for studying ureteric stent-induced cell injury. BJU Int. 2009 Nov 3. 105(9):1318-23PMID: 19888977. Winner “Best Endourology Paper” World Congress of Endourology 2009
  • Dirk Lange & Ben H. Chew. Update on ureteral stent technology. Therapeutic Advances in Urology, August 2009; vol. 1, 3: pp. 143-148.
  • Lange D, Elwood CN, Choi K, Hendlin K, Monga M, Chew BH. Uropathogen interaction with the surface of urological stents using different surface properties. J Urol. 2009 182: 1194-1200). (same work that won the best abstract prize at 2008 AUA)
  • Chew BH, Lange D. Ureteral stent symptoms and associated infections: a biomaterials perspective. Nature Reviews Urology. 2009 6: 440-448.


  • Hadaschik BA, Paterson RF, Fazli L, Clinkscales KW, Shalaby SW, Chew BH: Investigation of a novel degradable ureteral stent in a porcine model. J Urology 2008 Sep;180(3):1161-6.
  • Chew BH, Hadaschik BA, Paterson RF, Lange D. Biodegradable Ureteral Stents. AIP Conference Proceedings 1049:164-172, 2008.

Online articles

  • Marion B Coulter-Mackie, PhD, Colin T White, MD, Dirk Lange, PhD, and Ben H Chew, MD, MSc, FRCSC. Primary Hyperoxaluria Type 1. 2002 Jun 19 [Updated 2014 Jul 17]. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2014. Available at

Published Book Chapters

  • Ben H. Chew, Ryan F. Paterson, Dirk Lange. “Chapter 10: Ureteral Stents. In Ureteral Stone Management: A Practical Approach.” Edited by Sutchin Patel & Steven Nakada. Springer Publishers. 2014.
  • Ben H. Chew, Ryan Flannigan, Dirk Lange. “Chapter 5: Struvite Stones, Diet and Medications. “POCKET GUIDE TO KIDNEY STONE PREVENTION: DIETARY & MEDICAL THERAPY.” Edited by David Goldfarb, Kris Penniston, Manoj Monga. Springer Publishers. 2014.
  • Ben H. Chew, Ryan F. Paterson and Dirk Lange. “Ureteral Stents”. Ureteroscopy: Indications, Instrumentation and Technique. Ed. Manoj Monga, Springer Verlag, 2013. Chapter 17
  • Dirk Lange, Claudia Janssen, and Ben H. Chew. “Stent Materials and Designs.” Handbook of Urinary Stents. edited by Noor Buchholz, Junaid Masood, Oliver Hakenberg and Christian Bach. JP Medical Ltd. 2013.
  • Ben H. Chew, Ryan F. Paterson, Michael J. Metcalfe. Chapter 6.1. Instrumentation & Surgical Technique: Tract dilation & Endoscopes. In Percutaneous Management of Renal Calculi. Editor: Manoj Monga. Publisher: Wiley. 2013
  • Ben H. Chew, Dirk Lange, and Roger Sutton. “Oxalate and Urolithiasis”. Management of Urolithiasis: Rational Deployment of Technology. Springer Verlag, 2012.
  • Ben H. Chew, Ryan F. Paterson, Dirk Lange. Clinical Uses and Applications of Ureteral Stents In Polymers for Vascular and Urogenital Applications Editors: Shalaby W. Shalaby, Karen Burg, Waleed Shalaby. Publisher: Taylor and Francis. May 3, 2012. ISBN-10: 1420076949. ISBN-13: 978-1420076943 Wrote the majority of the chapter.
  • Ureteroscopy: Ureteral Stents and Postoperative Care, Chapter 46. Ben H. Chew and Ryan F. Paterson in Smith’s Textbook of Endourology. Editor in Chief: Arthur Smith. Section Editors; Glenn Preminger, Gopal Badlani, Louis Kavoussi. John Wiley and Sons, December 4, 2011 ISBN: 978-1-4443-3554-5 Wrote the majority of the chapter.
  • Oxalate and Hyperoxaluria in Idiopathic Calcium Nephrolithiasis. Ben H. Chew, Dirk Lange, Roger A.L. Sutton in The Management of Urolithiasis: the Rational Deployment of Technology, Editors: Jamsheer J. Talati, R.A.L. Sutton, F. Moazam, M. Ahmed. Publisher Springer UK. Published: Oct 25, 2012. ISBN-10: 9401062706 | ISBN-13: 978-9401062701Wrote the majority of the chapter.
  • Biomaterials in Urology–Beyond Drug Eluting and Degradable—a Rational Approach to Ureteral Stent Design. Dirk Lange, Chelsea Elwood and Ben H. Chew in Biomaterials ISBN 978-953-307-418-4 publisher: InTech Web, Editor: Rosario Pignatello. November 14, 2011 URL: Wrote the majority of the chapter.
  • Lange, Dirk, Peter A Cadieux and Ben H Chew. “Biofilms in Urology”. Biofilms: Formation, Development and Properties. New York: Nova Publishers, 2010. Chapter 12
  • Chew B. Diagnosis of Ureteropelvic Junction Obstruction. In Top Tips in Endourology. Edited by Rane A, Monga M, Desai M, Keeley Jr FX. Euromed Communications, Passfield, Hampshire, UK, 2010. p31-32. Wrote the chapter.
  • Chew B. Management of Ureteric Strictures and Extrinsic Obstruction. In Top Tips in Endourology. Edited by Rane A, Monga M, Desai M, Keeley Jr FX. Euromed Communications, Passfield, Hampshire, UK, 2010. p58-59. Wrote the chapter.
  • Dirk Lange & Ben H. Chew. Biomaterials and Tissue Engineering in Urology. Chapter 5 Ureteral Stents – design and common materials. Woodhead Publishing, Cambridge, UK. June 5, 2009. Editors: John Denstedt & Anthony Atala. ISBN-10: 1439801770 | ISBN-13: 978-1439801772 Wrote the majority of the chapter.
  • Chew BH. Chapter 2 Evaluation for Primary Hyperthyroidism. In Stone Disease: 2nd International Consultation on Stone Disease. Editors: Denstedt J and Khoury S. Health Publications WHO, Paris, France, 2008. Wrote this portion for this international committee on guidelines on diagnosing and treating kidney stone diseases. Presented at the 2007 SIU in Paris and published by the WHO. ISBN 0-9546956-7-4
  • Chew BH. Denstedt JD. Chapter 45: Ureteroscopy and Retrograde Ureteral Access. In Campbell’s Urology Ninth Edition. Editors: Patrick C. Walsh, Alan B. Retick, E. Darracott Vaughn Jr, Alan J. Wein. Elsevier Science, San Diego, CA, USA 2007. Performed the literature search and co-authored the chapter with Dr. Denstedt.
  • Chew BH. Denstedt JD. Stents, Access and Urinary Drainage. Chapter 2. In Advanced Endourology: A Complete Guide to Advanced Endo-urologic Procedures. Editors: Stephen Y. Nakada and Margaret S. Pearle. Humana Press, New Jersey, USA, 2008. Performed the literature search and co-authored the chapter with Dr. Denstedt.
  • Chew BH, Duvdevani M, Denstedt JD. Results of Ureteroscopy in the Management of Urinary Tract Stones. In Urinary Stone Disease First Edition. Editors: A.Y. Muslumanoglu, T. Esen, and A. Tefekli. Publisher: Nobel Týp Kitabevi, Istanbul, Turkey. (2006). Performed the literature search and wrote the chapter.