RT Journal Article SR Electronic T1 A decrease of the butyrate-producing species Roseburia hominis and Faecalibacterium prausnitzii defines dysbiosis in patients with ulcerative colitis JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1275 OP 1283 DO 10.1136/gutjnl-2013-304833 VO 63 IS 8 A1 Kathleen Machiels A1 Marie Joossens A1 João Sabino A1 Vicky De Preter A1 Ingrid Arijs A1 Venessa Eeckhaut A1 Vera Ballet A1 Karolien Claes A1 Filip Van Immerseel A1 Kristin Verbeke A1 Marc Ferrante A1 Jan Verhaegen A1 Paul Rutgeerts A1 Séverine Vermeire YR 2014 UL http://gut.bmj.com/content/63/8/1275.abstract AB Markup server — Error Error There was a problem handling your request. Please try again in a few minutes, or contact us if you continue to experience this problem.