Review for 10.1186/s12876-019-1077-y (2019)

Reviewer’s report
Title:  Extracorporeal liver support: trending epidemiology and mortality - A nationwide database  
analysis 2007-2015
Version: 1 Date: 19 Jul 2019
Reviewer: G. Auzinger
Reviewer's report:
The authors have largely addressed all previously made requests for Revision.
The manuscript could be further improved if the authors could provide outcome information for the  
ELS Liver Transplant group. I appreciate that information regarding timing of ELS in relation to Tx is  
not available; it would nevertheless be interesting to see how overall mortality and graft survival  
compares to the entire cohort and all patients with primary and those with secondary liver injury.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
Yes
Does the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
Yes
Are you able to assess any statistics in the manuscript or would you recommend an additional  
statistical review?
If  an  additional  statistical  review  is  recommended,  please  specify  what  aspects  require  further  
assessment in your comments to the editors.
Not relevant to this manuscript
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
Declaration of competing interests
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