NCT00272467
- Conditions
- Digestive System Diseases, Duodenal Diseases, Gastrointestinal Diseases, +4 more
- Locations
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- The 1st Affiliated hospital - Zhongshan Univ. Guangzhou, Guangdong, China
- Nanfang Hospital - Nanfang Medical Univ. Guangzhou, Guangdong, China
- Xijing Hospital - The 4th Military Medical Univ Xi’an, Shanxi, China
- The 1st Affiliated Hospital - Medical School of Zhejiang Univ. Hangzhou, Zhejiang, China