Effect of Sub-Chronic Treatment with Jarsin® (Extract of St John’s Wort, Hypericum perforatum) at Two Dose Levels on Evening Salivary Melatonin and Cortisol Concentrations in Healthy Male Volunteers - Franklin, M; Hafizi, S; Reed, A; Hockney, R; Murck, H (Pharmacopsychiatry, 2006)