comparative trial
1.A COMPARATIVE TRIAL WITH STEM AND LEAF POWDERS MADEFROM SPRING VETCH CV.333/A IN FEEDING SWINE
2.Comparative Early and Late Outcomes After Primary Percutaneous Coronary Intervention in ST-Segment Elevation and Non-ST-Segment Elevation Acute Myocardial Infarction(from the CADILLAC Trial)
3.In order to know the efficacy of three disinfection methods in disinfection of indoor air,on-the-spot trial method was used to carry out comparative observation on three methods including chlorine dioxide aerosol spray,ozone fumigation and chlorobromoisocyanuric acid smoke agent fumigation.

