The Effects of St. John's Wort on Premenstrual Syndrome in Single Women: A Randomized Double-Blind, Placebo-Controlled Study
Jung-Gum Ryoo1, Sae-Il Chun1, Young-Jin Lee2, Ho-Suk Suh3
1Graduate School of Complementary Alternative Medicine, 2Department of Family Medicine, School of Medicine, 3Department of Psychiatry,
School of Medicine, CHA University, Seoul, Korea