RT Journal Article SR Electronic T1 From trash to gold: gastrointestinal microbiome research in patients with functional gastrointestinal disorders JF Journal of Investigative Medicine JO J Investig Med FD BMJ Publishing Group Ltd SP 793 OP 795 DO 10.1136/jim-2021-001903 VO 69 IS 4 A1 Gerald Holtmann A1 Ayesha Shah A1 Mark Morrison YR 2021 UL http://hw-f5-jim.highwire.org/content/69/4/793.abstract AB