In 1210 cases a causal factor was revealed including blood vessel compression, tumor compression, compression of arachnoid cysts and adherence, only 10 cases remained unclear etiology.
均找到了病因，包括1210例血管压迫，肿瘤压迫或蛛网膜囊肿和粘连所致，仅有10例未发现病因。
2
Problems with adherence were a factor, but such strains mostly arose in patients taking drugs that were less effective than the combination therapies that later became available.
患者缺乏依从性是重要的因素，但是这些耐药突变病毒在联合用药的患者中出现的较前弱的趋势也是有用的。
3
The second vital factor is the faithful adherence to those beliefs and is represented by your behavior.