生物标记物还能用于鉴别临床试验的合适病人群体。
Biomarkers can also be used to identify appropriate patient groups for clinical trials.
不同的医院的病人群体在平均疾病严重程度上不同。
B. Patient populations vary substantially in average severity of illness from hospital to hospital.
虽然罕见，但是主动脉窦瘤在男性和亚裔人种比其他病人群体还是稍微多见一些。
Although rare, Valsalva sinus aneurysms are slightly more common in men and people of Asian descent than they are in other patient groups.
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