Extracorporeal photopheresis for the treatment of refractory Crohn's disease: Results of an open-label pilot study

Maria T. Abreu, Christian von Tirpitz, Robert Hardi, Martin Kaatz, Gert Van Assche, Paul Rutgeerts, Emil Bisaccia, Sergi Goerdt, Stephen Hanauer, Robert Knobler, Peter Mannon, Lloyd Mayer, Thomas Ochsenkuhn, William J. Sandborn, Dennis Parenti, Kevin Lee, Walter Reinisch