President Moshe Katsav and his wife Gila will donate blood at Beit Hanassi to serve as an example to the public, who have been asked by Magen David Adom to help it cope with the current shortage of Type O and RH- blood of all types. Only 660 people - a third of them Jerusalemites - donated blood during three days of the special campaign. But MDA stations will remain open (at shorter hours than during the campaign) to accept blood. Call (03) 530-0400 for more information. MDA said that as a result of the shortage, some hospitals may be forced to postpone elective operations, and their ongoing activities will be disrupted.