Question: is this a 2) strong advice, 1) weak advice 0) no advice?

The use of low oxygen will not affect the clinical outcome in the fresh cleavage-transfer cycles, but it will result in more favorable clinical outcomes in the subsequent warming blastocyst-transfer cycles, with statistically significantly higher CPR and IR compared with atmospheric oxygen, indicating that the detrimental effect of atmospheric oxygen on human pre-compaction embryos are cumulative and would manifest at the later stages of preimplantation development. 
user
This is no advice
assistant