Robert Kalimi, Gary R. Gecelter, Drew Caplin, Michael Brickman, Gene T. Tronco, Charito Love, Jeffery Yao, H.Hank Simms, Corrado P. Marini,
Diagnosis of acute cholecystitis: sensitivity of sonography, cholescintigraphy, and combined sonography-cholescintigraphy Journal of The American College of Surgeons. ,vol. 193, pp. 609- 613 ,(2001) ,
10.1016/S1072-7515(01)01092-4