... nothing else to declare Authors' contributions LEK (guarantor)participated in study design, acquisition of data, draft and revision ofthe manuscript, and analysis and interpretation of data TS participated ... participated in study design, revision ofthe manuscript, and interpretation of data J-AN participated in study design, revision ofthe manuscript, and analysis and interpretation of data PG participated ... Adherence to therapy for patients treated with infliximab The level of adherence to therapy is shown as the fraction (between and 0) of patients infliximab remaining on therapy during the observation...