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Othman MO, Bradley AG, Choudhary A, Hoffman RM, Roy PK.Othman MO, et al. Among authors: roy pk.Endoscopy. 2009 Jan;41(1):17-24. doi: 10.1055/s-0028-1103488. Epub 2009 Jan 21.Endoscopy. 2009.PMID: 19160154
Choudhary A, Bechtold ML, Arif M, Szary NM, Puli SR, Othman MO, Pais WP, Antillon MR, Roy PK.Choudhary A, et al. Among authors: roy pk.Gastrointest Endosc. 2011 Feb;73(2):275-82. doi: 10.1016/j.gie.2010.10.039.Gastrointest Endosc. 2011.PMID: 21295641Review.
Parker-Ray N, Barakat J, Roy PK, White RE, Schrader RM, Hoffman RM.Parker-Ray N, et al. Among authors: roy pk.Indian J Gastroenterol. 2010 Jun;29(3):106-11. doi: 10.1007/s12664-010-0032-1. Epub 2010 Jul 25.Indian J Gastroenterol. 2010.PMID: 20658327
Hart PA, Bechtold ML, Marshall JB, Choudhary A, Puli SR, Roy PK.Hart PA, et al. Among authors: roy pk.South Med J. 2008 Nov;101(11):1126-31. doi: 10.1097/SMJ.0b013e31817ecbda.South Med J. 2008.PMID: 19088522
Kanth R, Shrestha RB, Rai I, VanWormer JJ, Roy PK.Kanth R, et al. Among authors: roy pk.Clin Med Res. 2017 Jun;15(1-2):13-18. doi: 10.3121/cmr.2017.1351. Epub 2017 May 9.Clin Med Res. 2017.PMID: 28487448Free PMC article.Clinical Trial.