diff --git a/Latex/Paper/sections/05_LitReview.tex b/Latex/Paper/sections/05_LitReview.tex
index 5a624ec..a692d3a 100644
--- a/Latex/Paper/sections/05_LitReview.tex
+++ b/Latex/Paper/sections/05_LitReview.tex
@@ -58,6 +58,7 @@ She found that overall 8.4\% of all pipeline exits are due to strategic
 terminations and that the rate of new drug production would be about 23\% 
 higher if those strategic terminatations were elimintated
 (\cite{khmelnitskaya_competition_2021}).
+% causal separation of strategic exits etc.
 
 % Waring, Arrosmith, Leach, et al (2015)
 % - Atrition of drug candidates from four major pharma companies