Patients were followed every 6 weeks for 24 weeks following randomization.
患者随机分组后每6周随访一次，持续24周。
Following randomization, creatinine measurements were taken at 2 weeks, 6 weeks, 4 months, and every 4 months thereafter.
遵循随机化原则，肌酐分别采取自2个星期，6个星期，4个月。
Methods The study was strictly designed with randomization, double blinding, and placebo controlled method to observe the efficacy and immune memory 11 years following hepatitis B vaccination.
方法按随机、双盲、安慰剂对照严格设计，对乙型肝炎疫苗接种11年后效果及免疫记忆进行观察。
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