BibTex format
@article{Blackwell:2018:10.1136/gutjnl-2017-315840,
author = {Blackwell, J and Saxena, S and Pollok, RC},
doi = {10.1136/gutjnl-2017-315840},
journal = {GUT},
pages = {2229--+},
title = {Role of thiopurines as disease-modifying agents in Crohn's disease},
url = {http://dx.doi.org/10.1136/gutjnl-2017-315840},
volume = {67},
year = {2018}
}