Ultrasound study on the sizes of normal extrahepatic bile ducts.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D003135:Common Bile Duct / Q000033:anatomy & histology*; D005260:Female; D006500:Hepatic Duct, Common / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography