Review for 10.1186/s12876-021-02018-7 (2021)

Reviewer’s report
Title: 
Endoscopic negative pressure therapy as stand-alone treatment for
perforated duodenal diverticulum – presentation of two cases
Version: 
2 
Date: 
04 Oct 2021
Reviewer's report:
The revised manuscript has been improved considerably. Thank you for adding
Figure 1. 
1) If possible, please the authors should consider adding X-P image after tube
placement. 
2) line 231: Is "gastral" correct? Is it "duodenal"?
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