| 历史版本 | 注册号 | 注册题目 | 研究类型 | 注册时间 |
|---|---|---|---|---|
| 历史版本 | ChiCTR2100044023 |
The Impact of Thyroid Tumor Features on Lymph Node Metastasis in Papillary Thyroid Carcinoma Patients in Head and Neck Department at KAMC: A Retrospective Cross-Sectional Study
No |
观察性研究 | 2021/03/06 |
| 历史版本 | ChiCTR2000034383 |
Hospital readmission after surgery: a medical records based study
None |
观察性研究 | 2020/07/04 |