Associations between exposure to air pollutants and in vitro fertilization outcomes: a systematic review and meta-analysis.

We have undertaken a systematic review and meta-analysis to investigate the association between maternal exposure to air pollutants and outcomes of in vitro fertilization (IVF). Studies were identified through a comprehensive online search. After standardizing all air pollution concentrations to 10 μg/m, we analyzed the levels of six air pollutants (PM2.