RT Journal Article SR Electronic T1 Herbal medicine – all change JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 37 OP 37 DO 10.1136/dtb.2011.02.0020 VO 49 IS 4 YR 2011 UL http://dtb.bmj.com/content/49/4/37.abstract AB