Thank you for giving me a chance to review this manuscript. I am interested in this article. However, I think that there may be a large difference in general and local condition between NRT and RT groups, which difference must affect the choice of treatment strategy. There also may be large difference in the treatment strategy and technique between 13 years ago and now. Therefore these types of researches have big limitaion. 

• competing interests: No
• Invited by the author to make a review on this article? :
• Experience and credentials in the specific area of science:

  Surgical critical care for abdominal emergency including colonic perforation 

• Publications in the same or a related area of science: No
  
• References: None