选病情及手术方法与实验组一致的头颈癌病人46例作为对照组，不采用稀释式自身输血，有输血指征时输入异体血。
The other 46 patients with the same disease and operation were served as the control group, without autotransfusion and a donors blood was transfused only in case of need.
免疫接种约占全部注射的3%，其余的则用于其它指征，包括输血和血液制品以及避孕用药。
Immunization accounts for around 3% of all injections, with the remainder for other indications, including use of injections for transfusion of blood and blood products and contraceptives.
有指征时应输血。
有指征时应输血。
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