Addresses of authors
Faten Abdelghani: Faculty of Medicine Mansoura University, Egypt / Royal Brompton Hospital , London
Hala Elmarsafawy : Faculty of Medicine Mansoura University , Egypt Faculty of Medicine New Mansoura, Egypt
Ahmad Wafa : Faculty of Medicine Mansoura University , Egypt
Mahmoud Youssof : Faculty of Medicine Mansoura University , Egypt
Wei Li : Royal Brompton Hospital , London
Michael Gatzoulis : Royal Brompton Hospital , London