Development and validation of a pediatric Crohn's disease activity index.
Hyams JS, Ferry GD, Mandel FS, Gryboski JD, Kibort PM, Kirschner BS, Griffiths AM, Katz AJ, Grand RJ, Boyle JT, et al.
Hyams JS, et al. Among authors: gryboski jd.
J Pediatr Gastroenterol Nutr. 1991 May;12(4):439-47.
J Pediatr Gastroenterol Nutr. 1991.
PMID: 1678008
Clinical Trial.