METHODS:cases of prurigo children were divided into groups at random.
METHODS:cases of prurigo children were divided into groups at random.
方法:将例痒疹患儿随机分为A、B、C 组。
METHODS:cases of prurigo children were divided into groups at random.
方法:将例痒疹患儿随机分为A、B、C 组。