Feuerstein, J. D., Isaacs, K. L., Schneider, Y., Siddique, S. M., Falck-Ytter, Y., Singh, S., & AGA Institute Clinical Guidelines Committee. (2020). AGA Clinical Practice Guidelines on the Management of Moderate to Severe Ulcerative Colitis. Gastroenterology, 158(5), 1450–1461. https://doi.org/10.1053/j.gastro.2020.01.006

Feuerstein, Joseph D., Kim L. Isaacs, Yecheskel Schneider, Shazia Mehmood Siddique, Yngve Falck-Ytter, Siddharth Singh, and AGA Institute Clinical Guidelines Committee. “AGA Clinical Practice Guidelines on the Management of Moderate to Severe Ulcerative Colitis.” Gastroenterology 158, no. 5 (April 2020): 1450–61. https://doi.org/10.1053/j.gastro.2020.01.006.

Feuerstein JD, Isaacs KL, Schneider Y, Siddique SM, Falck-Ytter Y, Singh S, et al. AGA Clinical Practice Guidelines on the Management of Moderate to Severe Ulcerative Colitis. Gastroenterology. 2020 Apr;158(5):1450–61.

Feuerstein, Joseph D., et al. “AGA Clinical Practice Guidelines on the Management of Moderate to Severe Ulcerative Colitis.” Gastroenterology, vol. 158, no. 5, Apr. 2020, pp. 1450–61. Pubmed, doi:10.1053/j.gastro.2020.01.006.

Feuerstein JD, Isaacs KL, Schneider Y, Siddique SM, Falck-Ytter Y, Singh S, AGA Institute Clinical Guidelines Committee. AGA Clinical Practice Guidelines on the Management of Moderate to Severe Ulcerative Colitis. Gastroenterology. 2020 Apr;158(5):1450–1461.