Polysomnographic Evaluation of the Hypnotic Effect of Valeriana edulis Standardized Extract in Patients Suffering from Insomnia - Herrera-Arellano, Armando; Luna-Villegas, Gustavo; Cuevas-Uriostegui, Ma Luisa; Alvarez, Laura; Vargas-Pineda, Gabriela; Zamilpa-Alvarez, Alejandro; Tortoriello, Jaime (Planta Medica, 2001)