Singhal Manphool, Ramanathan Subramaniyan, Bahl Ajay, Singh Paramjeet
Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh, India.
Postgrad Med J. 2011 Nov;87(1033):790. doi: 10.1136/postgradmedj-2011-130192.