1. Li J, He LY, Song WZ. Acta Pharm Sin. 1993;28(7):543.
2. Cao F, Ma CH, Qiao YJ. J Beijing Univ Tradit Chin Med. 2003;26(6):45.
3. Pan YN, Yuan D, Fu WW, et al. J Shenyang Pharm Univ. 2004;21(3):196.
4. Wang YZ, Lie WS. J Pediatr Pharm. 2004;10(4):18.
5. Yuan JX, Zhu LZ. Chin Patent Med. 1996;18(1):15.