RT Journal Article SR Electronic T1 Two weeks of rifaximin relieves global symptoms and bloating in people with IBS without constipation JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 156 OP 157 DO 10.1136/ebm1404 VO 16 IS 5 A1 Spiegel, Brennan YR 2011 UL http://ebm.bmj.com/content/16/5/156.abstract AB