RT Journal Article SR Electronic T1 Retroperitoneal cyst hemorrhage in polycystic kidney disease JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 20 OP 21 DO 10.3949/ccjm.82a.14007 VO 82 IS 1 A1 Cheng, Cathy I. A1 Karvelas, Nicolas B. A1 Aronowitz, Paul YR 2015 UL http://www.ccjm.org/content/82/1/20.abstract AB