RT Journal Article SR Electronic T1 Retroperitoneal perforation of the descending colon diverticulitis presenting with systemic emphysema JF Trauma Surgery & Acute Care Open JO Trauma Surg Acute Care Open FD BMJ Publishing Group Ltd SP e000606 DO 10.1136/tsaco-2020-000606 VO 5 IS 1 A1 Kaori Kono A1 Kaori Ito A1 Yuko Sasajima A1 Yasufumi Miyake A1 Tetsuya Sakamoto YR 2020 UL http://tsaco.bmj.com/content/5/1/e000606.abstract AB