Zum Status quo der Johanniskraut-ForschungBeiträge des Symposiums»Phytopharmaka 2000«, Bonn, Nov. 1998 *Hyperic.-Extract LI 160 for the Therapy of Herpes Simplex Genitalls and Labialis: Res. of Two Placebo-Controlled, Rand. Double-Blind Clinic. Trials