Cecily Mary Majella. J., Gnanavelu .G.,Venketesan Sangareddi,Dhandapani V.E.,Ravi M.S.,
Meenakshi .K.,MuthuKumar.D.,Swaminathan .N.,Ravishankar .G.,Prathapkumar.G.
Postgraduate Department of cardiology, Madras Medical College, Chennai, India.
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