There is substantial regional variability in vaccine use, and the study suggests that expanded use of Hib vaccines could have considerable benefit in reducing child mortality worldwide.
疫苗的使用在不同的地区产生显著的变化，研究指出Hbi疫苗的广泛使用可是儿童死亡率有显著的降低。
If some specialists show considerable difference about the dissertation, it is suggested that substantial revision or modification must be done before submitting PhD viva application.
部分评议专家对论文有较大异议，建议对论文内容进行较大修改后方可申请答辩。
If some specialists show considerable difference about the dissertation, it is suggested that substantial revision or modification must be done before submitting PhD viva application.
部分评议专家对论文有较大异议，建议对论文内容进行较大修改后方可申请答辩。
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