Fig. 2

Study design and main findings. *Compared with the SC group by Bonferroni correction. ART, assisted reproductive technology; ET, embryo transfer; FET, frozen embryo transfer; GLS, global longitudinal strain; ICSI, intracytoplasmic sperm injection; IVF, in vitro fertilization; LV, left ventricle; RV, right ventricle; SC, spontaneous conception