Letter: Grey-scale ultrasonography in the investigation of obstructive jaundice.
D001650:Bile Duct Neoplasms / Q000150:complications / Q000175:diagnosis*; D002779:Cholestasis / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D005706:Gallbladder Neoplasms / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography