RT Journal Article SR Electronic T1 Subphrenic abscess from a perforated duodenal ulcer JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 377 OP 378 DO 10.3949/ccjm.78a.10098 VO 78 IS 6 A1 Yue Shen A1 Philip Ong A1 Niel Gandhi A1 Angela Degirolamo YR 2011 UL http://www.ccjm.org/content/78/6/377.abstract AB