采用小组访谈方法，分两组对干部进行调查。
Two groups discussions were conducted in countryside family planning cadres in Fujian province.
方法：74例缺血性心脏病稳定性心绞痛患者，随机分两组。
Methods: 74 patients of stable angina pectoris were divided in to two groups by chance.
方法42例早期梅毒患者分两组行不同剂量的头孢曲松钠肌注10天。
Methods 42 syphilitics were put into two groups and treated with different doses for 10 days of muscular injection.
应用推荐