00499nas a2200193   4500000000100000000000100001008004100002100001700043700001400060700001600074700001400090700001300104700001400117700001400131245012700145300001200272490000700284022001400291       2019                            d1 aJ. Blackwell1 aS. Saxena1 aC. Alexakis1 aA. Bottle1 aE. Cecil1 aA. Majeed1 aR. Pollok00aThe impact of smoking and smoking cessation on disease outcomes in ulcerative colitis: a nationwide population-based study  a556-5670 v50  a0269-2813