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研究目的在于确定鼻内给予免疫球蛋白预防儿童鼻炎症状的功效．对象和方法 对芬兰Ｔｕｒｋｕ日托中心的４０名１～４岁儿童进行双百安慰剂对照研究．将儿童随机分成二组，分别接受主要成分为ＩｇＡ的免疫球蛋白或安慰剂，每日鼻内喷雾两次共８周．在用药期间及其后的８周随访?
The purpose of the study was to determine the efficacy of intranasal administration of immunoglobulins to prevent the symptoms of rhinitis in children. Subjects and Methods Two hundred placebo-controlled studies were performed on 40 children aged 1 to 4 years at the Turku Day Care Center in Finland. Children were randomized to receive either IgA-immunoglobulin or placebo, respectively, and nasal spray twice daily for 8 weeks. During the medication and the follow-up of 8 weeks?