1. University of Haifa, Haifa, Israel and Mishaul Center for Augmentative Communication and Assistive Devices, Jerusalem, Israel
2. Beit Noam Day Center, Kyriat Ono, Israel and Mishaul Center for Augmentative Communication and Assistive Devices, Jerusalem, Israel
3. Hadassah-Hebrew University, Jerusalem, and Chaim Sheba Medical Center, Tel Hashomer, Israel