Quality evaluation and characterization of fractions with biological activity from Ephedra Herb extract and ephedrine alkaloids-free ephedra herb extract - Yoshimura, M; Amakura, Y; Hyuga, S; Hyuga, M; Nakamori, S; Maruyama, T; Oshima, N; Uchiyama, N; Yang, J; Oka, H; Ito, H; Kobayashi, Y; Odaguchi, H; Hakamatsuka, T; Hanawa, T; Goda, Y (Chem Pharm Bull (Tokyo), 2020)