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Inclusion and exclusion criteria
| Inclusion | Exclusion |
|---|---|
| Species evaluated must include but are not limited to humans (clinical study) | Human oocytes not used |
| English | Non-English literature |
| SER+ of oocytes but not limited to SER+ | No SER+ oocytes |
| IVF or ICSI for fertilization | Only embryo transfer |
| Births reported | No live births |
| SER+ and SER- contrasted | Lacking SER+ or SER- |
| Original research | Review |
