Case | Age (years) | Number of previous caesarean sections | Gestational age at diagnosis (weeks) | Gestational age at start of treatment (weeks) | β-hCG level at diagnosis (mIU/ml) | Maximum β-hCG level (mIU/ml) | Fetal heart beat (yes/no) | Number of times of local MTX administration | Gestational sac aspiration (yes/no) | Concurrent local injection | Time after treatment for β-hCG levels to decrease to <5 mIU/ml (days) | Time after treatment for menstruation to return (days) | Pregnancy after treatment (yes/no) |