Singh, S., George, J., Boland, B. S., Vande Casteele, N., & Sandborn, W. J. (2018). Primary Non-Response to Tumor Necrosis Factor Antagonists is Associated with Inferior Response to Second-line Biologics in Patients with Inflammatory Bowel Diseases: A Systematic Review and Meta-analysis. J Crohns Colitis.

Singh, Siddharth, John George, Brigid S. Boland, Niels Vande Casteele, and William J. Sandborn. "Primary Non-Response to Tumor Necrosis Factor Antagonists Is Associated With Inferior Response to Second-line Biologics in Patients With Inflammatory Bowel Diseases: A Systematic Review and Meta-analysis." J Crohns Colitis 2018.

Singh, Siddharth, et al. "Primary Non-Response to Tumor Necrosis Factor Antagonists Is Associated With Inferior Response to Second-line Biologics in Patients With Inflammatory Bowel Diseases: A Systematic Review and Meta-analysis." J Crohns Colitis 2018.