The virus usually clears up without serious complications.
病毒通常被清除，无严重并发症。
The removal rate of cancerous lesions by endoscopic resection was 97.5% without serious complications.
内镜治疗组癌灶完全切除率为97.5%，无严重并发症发生。
All patients were successfully cured in surgical operation, without serious complications like eye infection and loss of sight.
所有患者均手术成功治愈，无术眼感染和视力丧失等严重并发症。
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