(Q63443039)
Statements
A population-based study of the frequency of corticosteroid resistance and dependence in pediatric patients with Crohn's disease and ulcerative colitis (English)
William J Sandborn
L Joseph Melton
W Scott Harmsen
Alan R Zinsmeister
Deborah K Freese
Mounif El-Youssef
William A Faubion
1 December 2006