title: [Factors influencing the sonographic examination of the upper abdominal organs].
mesh_terms: D002986:Clinical Trials as Topic; D003135:Common Bile Duct / Q000502:physiology; D004311:Double-Blind Method; D005215:Fasting; D005502:Food; D005704:Gallbladder / Q000502:physiology; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D014463:Ultrasonography
vernacular_title: Einflussgrössen auf die sonographische Beurteilbarkeit der Oberbauchorgane.