Spectrum-effect relationship of antitussive effect by total organic acids in crude and four processed Pinellia ternate based on gray relative analysis method Effect of various factors such as habitat, growth period, and commercial specification on antitussive effect of Siraitia grosvenorii Studies on Antitussive, Expectorant and Anti-inflammatory Effects of Rhizoma Cynanchi Stauntonii Studies on Antitussive , Expettorant and Anti-astkinatic Effects ofCynanchum glaucescens (Decne. ) Hand. -Mazz.