1. The Cardiology Institute; Assaf-Harofeh Medical Center; 70300 Zerifin Israel
2. The Division of Cardiology; University Hospital; Zurich Switzerland
3. Actelion Ltd; Allschwil Switzerland
4. Rebecca Sieff Government Hospital; Safed Israel
5. Ashkelon Hospital; Ashkelon Israel
6. Kaplan Hospital; Kaplan Israel