Ashraf Omer, Shahabuddin Syed, Khan Ghufranullah, Sharif Hasanat
Section of Cardiothoracic Surgery, Department of Surgery, Aga Khan University Hospital, Stadium Road, Karachi 74800, Pakistan.
Asian Cardiovasc Thorac Ann. 2006 Oct;14(5):443-4. doi: 10.1177/021849230601400522.