Authors: William J Sandborn; Paul Rutgeerts; Brian G Feagan; Walter Reinisch; Allan Olson; Jewel Johanns; Jiandong Lu; Kevin Horgan; Daniel Rachmilewitz; Stephen B Hanauer; Gary R Lichtenstein; Willem J S de Villiers; Daniel Present; Bruce E Sands; Jean Frédéric Colombel Journal: Gastroenterology Date: 2009-07-28 Impact factor: 22.682