Figures legends

Figure 1. Flow diagram of study population
Figure 2. The rate of preterm births before 26, 28, 32, and 34 weeks gestation by long-term indomethacin (LIT) and non-LIT groups
Figure 3. The probability of staying pregnant after fetoscopic laser surgery (FLS) by long-term indomethacin (LIT) and non-LIT groups