From All India Institute of Medical Sciences, New Delhi, India.
The authors report no conflicts of interest regarding the content herein.
Manuscript submitted April 23, 2008 and accepted May 19, 2008.
Address for correspondence: Ravi S. Math, MBBS, MD, DM, All India Institute of Medical Sciences, Department of Cardiology, Ansari Nagar, New Delhi, Delhi 110029 India. E-mail: [email protected]