NCT04671641
- Conditions
- Cardiovascular Diseases, Varicose Veins, Vascular Diseases
- Locations
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- Zhongshan Hospital Shanghai, Shanghai Municipality, China
- Affiliated Hangzhou First People's Hospital ,Zhejiang University School of Medicine Hangzhou, Zhejiang, China
- ZheJiang Provincial People's Hospital Hangzhou, Zhejiang, China
- The Fourth Affiliated Hospital ,Zhejiang University School of Medicine Hangzhou, Zhejiang, China