1. Cai WR, Qian H, Zhu YH, Song K, Zhang H, Wang Z, Tang J (2000) Experimental study on the anti-allergic and antiasthmatic effects of Peony Licorice decoction. Chin J Crit Care Med 7:341–342
2. Cao PX, Liang GY, Xu BX, Jin FY, He ZY (2001) Determination of glycyrrhizic acid in Mahuang Decoction by HPLC when decocted separately or as a whole. Chin Trad Herb Drugs 32:981–983
3. Chen LC, Chou MH, Lin MF, Yang LL (2002) Pharmacokinetics of paeoniflorin after oral administration of Shao-yao Gan-cao Tang in mice. Jpn J Pharmacol 88:250–255
4. Cui J, Gen H, Liu SJ, Chen X (2001) Study on chemical component changes in formulation of Vietnamese sophora root. Chin Trad Herb Drugs 32:613–614
5. Di B, Feng N, Liu W (2006) Pharmacokinetic comparisons of Shuang–Huang–Lian with the different combinations of its constitutional herbs. J Ethnopharmacol 107:401–405