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为提高人民素质作好优生优育工作,防治智能发育不全(简称智不全)已成为儿保工作的重点。智不全不仅是一种疾病而且是很重要的社会问题,为此,对天津市河北区学龄前儿童进行了智不全的调查。一、组织及方法
To improve the quality of the population to make good prenatal and postnatal care, prevention and treatment of intellectual underdevelopment (referred to as incomplete) has become the focus of child protection work. Not all is not only a disease, but also a very important social problem. To this end, I conducted a survey of pre-school children in Hebei District of Tianjin. First, the organization and methods