Battat R, Kopylov U, Bessissow T, Bitton A, Cohen A, Jain A, Martel M, Seidman E, Afif W.
2017.
Association Between Ustekinumab Trough Concentrations and Clinical, Biomarker, and Endoscopic Outcomes in Patients With Crohn's Disease.. Clin Gastroenterol Hepatol. 15(9):1427-1434.e2.
Yang E, Panaccione N, Whitmire N, Dulai PS, Casteele NVande, Singh S, Boland BS, Collins A, Sandborn WJ, Panaccione R et al..
2020.
Efficacy and safety of simultaneous treatment with two biologic medications in refractory Crohn's disease.. Aliment Pharmacol Ther. 51(11):1031-1038.
Battat R, Kopylov U, Byer J, Sewitch MJ, Rahme E, Nedjar H, Zelikovic E, Dionne S, Bessissow T, Afif W et al..
2017.
Vitamin B12 deficiency in inflammatory bowel disease: a prospective observational pilot study.. Eur J Gastroenterol Hepatol. 29(12):1361-1367.
Battat R, Kopylov U, Szilagyi A, Saxena A, Rosenblatt DS, Warner M, Bessissow T, Seidman E, Bitton A.
2014.
Vitamin B12 deficiency in inflammatory bowel disease: prevalence, risk factors, evaluation, and management.. Inflamm Bowel Dis. 20(6):1120-8.
] Year 
