Singh P, Shankar S, Sharma B S, Nk V, Khandelwal N, Suri S
Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
J Comput Assist Tomogr. 2000 Jan-Feb;24(1):176-7. doi: 10.1097/00004728-200001000-00031.