Painchart, Claire Ustekinumab Serum Trough Levels May Identify Suboptimal Responders to Ustekinumab in Crohn's Disease. [electronic resource] - Digestive diseases and sciences 05 2020 - 1445-1452 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1573-2568 Standard No.: 10.1007/s10620-019-05865-3 doi Subjects--Topical Terms: AdultBiomarkers--bloodCrohn Disease--bloodFemaleHumansInduction ChemotherapyMaleMiddle AgedProspective StudiesReference ValuesTreatment OutcomeUstekinumab--blood