Ustekinumab dose escalation improves clinical responses in refractory Crohn’s disease oleh Syedreza A. Haider, Abhijeet Yadav, Courtney Perry, Leon Su, Olalekan Akanbi, Praneeth Kudaravalli, Nishant Tripathi, Mahmoud A. Hashim, Mohammed Abdelsalam, Mohamed Hussein, Ahmed Elkheshen, Vihang Patel, Saad Emhmed Ali, Latoya Lamb, Karen Ingram, Casie Mayne, Amy B. Stuffelbeam, Deborah Flomenhoft, Arnold Stromberg, Terrence A. Barrett