@misc{indiciae8997ab9d3c75, title = {A simple clinical colitis activity index.}, author = {R S Walmsley and R C Ayres and R E Pounder and R N Allan}, year = {1998}, doi = {10.1136/gut.43.1.29}, url = {https://pubmed.ncbi.nlm.nih.gov/9771402/}, note = {Source identifier: 9771402} }