Ectopic pregnancies
Ectopic pregnancies after IVF-ET were classified as clinical or
verified ectopic pregnancies. A verified ectopic pregnancy was
defined as the presence of an extrauterine gestational sac on ultrasound
or following surgical intervention, whereas a clinical
ectopic pregnancy was defined as the absence of an intrauterine
gestational sac with abnormally increased serum human chorionic
gonadotropin concentrations.