Zulu,Hilda. Anatomical variations of the Circle of Willis as seen at the University Teaching Hospital/ Hilda Zulu. - Lusaka : The University of Zambia, 2016. - xiv,35p.: ill. THESIS Msc Hum Ana,The University of Zambia,2016. Includes bibliographical references. Subjects--Topical Terms: Cerebrovascular disease--Ultrasonic imaging.Stroke--diagnosis.