| Draft the protocol | Lun Li |
| Develop and run the search strategy | KeHu Yang |
| Obtain copies of studies | Lun Li |
| Select which studies to include (2 people) | Lun Li; Peng Zhang |
| Extract data from studies (2 people) | Peng Zhang; WenQin Jia |
| Enter data into RevMan | Lun Li; WenQin Jia |
| Carry out the analysis | KeHu Yang; Lun Li |
| Interpret the analysis | KeHu Yang; Peng Zhang |
| Draft the final review | Lun Li; KeHu Yang |
| Update the review | Lun Li; KeHu Yang |