@ARTICLE{
author={Rossi Claudia Pena,Hanauer Stephen B,Tomasevic Ratko S,Hunter John O,Shafran Ira,Graffner Hans},
year={2009},
title={Interferon beta-1a for the maintenance of remission in patients with Crohn's disease: results of a phase II dose-finding study},
journal={BMC GASTROENTEROLOGY},
volume={9},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Pena-Rossi C,Schreiber S,Golubovic Gradimir,Mertz-Nielsen A,Panes J,Rachmilewitz D,Shieh MJ,Simanenkov VI,Stanton D,Graffner Hans},
year={2008},
title={Clinical trial: a multicentre, randomized, double-blind, placebo-controlled, dose-finding, phase II study of subcutaneous interferon-beta-1a in moderately active ulcerative colitis},
journal={ALIMENTARY PHARMACOLOGY & THERAPEUTICS},
volume={28},
number={6},
pages={758-767},
document_type={Article},
}