Affiliation: | 1. The Aga Khan Hospital, Barack Obama Drive, Dar es Salaam, Tanzania;2. Nasiruddin Jamal, Director of Cardiology;3. The Aga Khan Hospital, Barack Obama Drive, P.O. Box 2289, Dar es Salaam, Tanzania. Tel: +255 22 2115151;4. Fax: +255 22 2115904;5. E‐mail: |