## S3 method for class 'Surv'
rbind(...)

y <- yl <- yr <- rnorm(10)
yl[1:5] <- NA; yr[6:10] <- NA
S1 <- survival::Surv(yl,yr,type="interval2")
S2 <- survival::Surv(y,y>0,type="right")
S3 <- survival::Surv(y,y<0,type="left")

rbind(S1,S1)
rbind(S2,S2)
rbind(S3,S3)