[Echo test].
D001653:Bile Ducts, Intrahepatic; D001659:Biliary Tract; D001660:Biliary Tract Diseases / Q000175:diagnosis; D002769:Cholelithiasis / Q000175:diagnosis; D005704:Gallbladder; D005705:Gallbladder Diseases / Q000175:diagnosis; D005706:Gallbladder Neoplasms / Q000175:diagnosis; D042882:Gallstones / Q000175:diagnosis; D006801:Humans; D014463:Ultrasonography