TY - STAND AU - V. Chhaya AU - S. Saxena AU - E. Cecil AU - V. Subramanian AU - V. Curcin AU - A. Majeed AU - R. Pollok BT - Inflamm Bowel Dis DO - 10.1097/mib.0000000000000290 M1 - 2 PY - 2015 SP - 385 EP - 91 T2 - Inflamm Bowel Dis TI - Impact of timing and duration of thiopurine treatment on first perianal surgery in Crohn\textquoterights disease: UK population-based study (1995-2009) VL - 21 SN - 1078-0998 ER -