RT Journal Article SR Electronic T1 Review: St John's wort is more effective than placebo for mild to moderate depressive disorders JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 82 OP 82 DO 10.1136/ebn.2.3.82 VO 2 IS 3 YR 1999 UL http://ebn.bmj.com/content/2/3/82.abstract AB