TY - JOUR T1 - Sigmoid volvulus: Coffee bean sign, whirl sign JF - Cleveland Clinic Journal of Medicine JO - Cleve Clin J Med SP - 81 LP - 82 DO - 10.3949/ccjm.87a.19064 VL - 87 IS - 2 AU - Yusaku Kajihara Y1 - 2020/02/01 UR - http://www.ccjm.org/content/87/2/81.abstract N2 - ER -