Twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)
twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)
Twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)
twin gestation, monochorionic/monoamniotic (one placenta, one amniotic sac)