他们认为有必要进一步扩大病人规模和延长随访时间的研究，以及进一步评估已知的预后因子和集落生成单位以及甲胎蛋白水平的价值。
They suggest that further studies with more patients and longer follow-up times would be useful, as would further evaluations of known prognostic factors together with CFU and AFP levels.
他们认为有必要进一步扩大病人规模和延长随访时间的研究，以及进一步评估已知的预后因子和集落生成单位以及甲胎蛋白水平的价值。
They suggest that further studies with more patients and longer follow-up times would be useful, as would further evaluations of known prognostic factors together with CFU and AFP levels.
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