PT - JOURNAL ARTICLE AU - Yusaku Kajihara TI - Sigmoid volvulus: Coffee bean sign, whirl sign AID - 10.3949/ccjm.87a.19064 DP - 2020 Feb 01 TA - Cleveland Clinic Journal of Medicine PG - 81--82 VI - 87 IP - 2 4099 - http://www.ccjm.org/content/87/2/81.short 4100 - http://www.ccjm.org/content/87/2/81.full SO - Cleve Clin J Med2020 Feb 01; 87