Fig. 4From: Impacts of the COVID-19 pandemic on Chinese assisted reproductive technology institutions and human sperm banks: reflections in the post-pandemic eraStatistics on the number of oocyte retrieval cycles in China. a Comparing the recovery ratio of service volumes in China ART from Jan. to Apr. in 2019 and 2020 (%); b Comparing the recovery ratio of service volumes in China sperm banks from Jan. to Apr. in 2019 and 2020 (%)Back to article page