Establishment of fingerprint of active fraction from dried body of Catharsius molossus by capillary electrophoresis and analysis by its total quantum statistical moment Study of additive properties of total quantum statistical moment of chromatographic fingerprint for Buyang Huanwu decoction Study of population pharmacokinetic model and parameter analyses for multiple components in Chinese matria medica formula Composition change in extraction process of Huanglian Jiedu Decoction by fingerprint division total statistical moment method