Reply to Letter on: 'Risk Factors Associated With Clostridium difficile Infection in Inflammatory Bowel Disease: A Systematic Review and Meta-analysis'. (29th October 2018) - Balram, Bhairavi; Battat, Robert; Al-Khoury, Alex; D'Aoust, Julie; Afif, Waqqas; Bitton, Alain; Lakatos, Peter L; Bessissow, Talat