Overall, the study is interesting. However in terms of the presentations of the paper, there are some drawbacks:
-	First, the importance of the study especially for case of Indonesia can not be found.
-	There are some parts requiring the citations.
-	There is still citation which is not listed in the Reference yet.
-	The Model of Cost efficiency is not clear. The explanation is suitable for the technical efficiency although the equation in the operational definition is correct. Thus, the explanation and the equatiion is different.
-	 The inconclusive findings should be explained why especially for the case of the association between CE and FI.
-	 The recommendation for future research is still not clear especially for the panel data
Hope these comments are not declining your passion in doing the research. Please revise it accordingly