diff --git a/slides.Rmd b/slides.Rmd
index 024b4b4..3c7644a 100644
--- a/slides.Rmd
+++ b/slides.Rmd
@@ -1,5 +1,5 @@
 ---
-title: Slides
+title: "Slides"
 execute:
   cache: true
   freeze: auto
@@ -491,20 +491,19 @@ find.best.surv(included)
 ```
 
 ```{r}
-surv <- Surv(follow.up, death) ~ tx.type + age.rec + hla.match
-fit.cox.model(surv, 3)
-surv <- Surv(follow.up, death) ~ tx.type + age.rec + age.donor
-fit.cox.model(surv, 3)
-surv <- Surv(follow.up, death) ~ tx.type + age.rec + cold.isc
-fit.cox.model(surv, 3)
-surv <- Surv(follow.up, death) ~ tx.type + age.rec + year
-fit.cox.model(surv, 3)
-surv <- Surv(follow.up, death) ~ tx.type + age.rec + sex
-fit.cox.model(surv, 3)
+# surv <- Surv(follow.up, death) ~ tx.type + age.rec + hla.match
+# fit.cox.model(surv, 3)
+# surv <- Surv(follow.up, death) ~ tx.type + age.rec + age.donor
+# fit.cox.model(surv, 3)
+# surv <- Surv(follow.up, death) ~ tx.type + age.rec + cold.isc
+# fit.cox.model(surv, 3)
+# surv <- Surv(follow.up, death) ~ tx.type + age.rec + year
+# fit.cox.model(surv, 3)
+# surv <- Surv(follow.up, death) ~ tx.type + age.rec + sex
+# fit.cox.model(surv, 3)
 ```
 
 
-```
 
 ---