Assefa, G Ultrasound guided fine-needle aspiration in Tikur Anbessa Hospital: a report of preliminary experience. [electronic resource] - Ethiopian medical journal Jan 2000 - 1-9 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 0014-1755 Subjects--Topical Terms: Abdominal Neoplasms--diagnostic imagingAdultBiopsy, Needle--economicsCost ControlCost-Benefit AnalysisDrainage--methodsEthiopiaFemaleHumansInfant, NewbornMaleMiddle AgedThoracic Neoplasms--diagnostic imagingTreatment OutcomeUltrasonography, Interventional--economics