RT Journal Article SR Electronic T1 Stool frequency is associated with gut microbiota composition JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 559 OP 560 DO 10.1136/gutjnl-2016-311935 VO 66 IS 3 A1 Fatemeh Hadizadeh A1 Susanna Walter A1 Meriem Belheouane A1 Ferdinando Bonfiglio A1 Femke-Anouska Heinsen A1 Anna Andreasson A1 Lars Agreus A1 Lars Engstrand A1 John F Baines A1 Joseph Rafter A1 Andre Franke A1 Mauro D'Amato YR 2017 UL http://gut.bmj.com/content/66/3/559.abstract AB