Expression and significance of PD-1 and PD-L1 in patients with recurrent spontaneous abortion: A protocol for systematic review and meta-analysis

Conclusion: This study will provide a new theoretical basis for the prevention and treatment of RSA. Trial registration number: DOI 10.17605/OSF.IO/CZD23. Ethics and dissemination: Formal ethical approval is not required, as the data are not individualized.
Source: Medicine - Category: Internal Medicine Tags: Research Article: Study Protocol Systematic Review Source Type: research