title: Severe depression does not respond to St. John's wort, study says.
authors.forename: K
authors.initials: K
authors.lastname: Traynor
mesh_terms: D002986:Clinical Trials as Topic; D003866:Depressive Disorder / Q000188:drug therapy* / Q000523:psychology; D006801:Humans; D020902:Hypericum / Q000627:therapeutic use*; D008517:Phytotherapy; D010946:Plants, Medicinal