1. Real-time ultrasonography. Diagnostic technique of choice in calculus gallbladder disease;Cooperberg, P.L.; Burhenne, H.J.;N Engl J Med
2. Comparison of real-time and gray scale static ultrasonic cholecystography;Raptopoulos, V.D.; Moss, L.; Reuter, K.; Kleinman, P.;Radiology
3. Should cholecystography or ultrasound be the primary investigation for gallbladder disease?;De Lacey, G.; Gaijar, B.; Twomey, B.; Levi, J.; Cox, A.G.;Lancet,1984
4. Accuracy of ultrasonography and oral cholecystography in the diagnosis of cholelithiasis;Mattson, M.W.; Sterchi, J.M.; Myers, R.T.;Am Surg
5. Does it matter who does ultrasound examination of the gallbladder?;Allen-Mersh, T.G.; Motson, R.W.; Hatley, W.;Br Med J