Upper gastrointestinal mucosal disease in pediatric Crohn disease and ulcerative colitis: a blinded, controlled study.
J Pediatr Gastroenterol Nutr. 2001 Apr;32(4):443-8. doi: 10.1097/00005176-200104000-00010.
J Pediatr Gastroenterol Nutr. 2001.
PMID: 11396811