Ravasio, Roberto, Raffaella Viti, and Antonio Saverio Roscini. 2023. “Cost Per Responder for Vedolizumab and Ustekinumab in Crohn’s Disease Patients After Failure of TNF-α Inhibitors in Italy”. AboutOpen 10 (1):13-21. https://doi.org/10.33393/ao.2023.2515.