diff --git a/_chapters/survival-analysis-interactive/01-survival-data/index.md b/_chapters/survival-analysis-interactive/01-survival-data/index.md
index 57e78c6..6ef227c 100644
--- a/_chapters/survival-analysis-interactive/01-survival-data/index.md
+++ b/_chapters/survival-analysis-interactive/01-survival-data/index.md
@@ -99,7 +99,7 @@ We can now easily transform this diagram into a data table. We order the data in
 
 
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@@ -203,7 +203,7 @@ Doing the calculation by hand once builds intuition. After that, we let a comput
 
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diff --git a/_chapters/survival-analysis-interactive/02-forming-and-comparing-groups/index.md b/_chapters/survival-analysis-interactive/02-forming-and-comparing-groups/index.md
index 65d73d6..2b6b8da 100644
--- a/_chapters/survival-analysis-interactive/02-forming-and-comparing-groups/index.md
+++ b/_chapters/survival-analysis-interactive/02-forming-and-comparing-groups/index.md
@@ -11,7 +11,7 @@ The first additional feature concerns the type of material out of which the dent
 **See the table below:**
 
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   height="600px"
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@@ -23,7 +23,7 @@ When we have a categorical feature, such as the type of material, it's easy to f
 
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@@ -73,9 +73,9 @@ On the other hand, if we want to group by a continuous feature we have to define
 Below, set the threshold to **brushing time > 6 minutes**. Then use the Kaplan-Meier widget and group by the newly created feature (called 'Selected'). Two curves should appear — one for those that brush more than 6 minutes a day, one for those that brush less. Feel free to experiment with different thresholds and see how the curves change.
 
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diff --git a/_chapters/survival-analysis-interactive/03-exploring-clinical-features/index.md b/_chapters/survival-analysis-interactive/03-exploring-clinical-features/index.md
index 61214de..a11948c 100644
--- a/_chapters/survival-analysis-interactive/03-exploring-clinical-features/index.md
+++ b/_chapters/survival-analysis-interactive/03-exploring-clinical-features/index.md
@@ -8,7 +8,7 @@ For this example let's use the **German Breast Cancer Study Group** data. The fi
 
 
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   height="600px" 
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@@ -16,7 +16,7 @@ We already know how to form and compare groups manually. For categorical feature
 
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@@ -60,14 +60,14 @@ Using numeric features to form cohorts takes an extra step; we need to define a
 
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diff --git a/_chapters/survival-analysis-interactive/04-ranking-survival-features/index.md b/_chapters/survival-analysis-interactive/04-ranking-survival-features/index.md
index 5485ec6..824257c 100644
--- a/_chapters/survival-analysis-interactive/04-ranking-survival-features/index.md
+++ b/_chapters/survival-analysis-interactive/04-ranking-survival-features/index.md
@@ -14,11 +14,11 @@ Let's look at the **Rank Survival Features** widget, which forms cohorts by spli
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