OBJECTIVE: To discuss problems concerning the current sampling test of drugs in China.
前言：目的讨论我国现行药品抽样检验中存在的问题。
2
Objective: To explore the sampling method of telephone survey.
目的：探讨电话访问的抽样方法。
3
Objective the aim of this study was to compare the differences in sampling methods of ct perfusion for soft tissue neoplasms in the head and neck regions.