The following is part of an e-mail dedication from the head of Otzmah Project of Emergency Medical Volunteers that involves physicians being on call for Israel. Of course, the late Dr. Applebaum was instrumental in this project as well.
The complete e-mail can be found in the first comment here.

The anguish and anger expressed by a number of, you following the murder Dr. David Appelbaum z" l and the recent acts of terror of these last 48 hours remind us of the task at hand. Dr. David Applebaum z"l, Director of the Emergency Department at Jerusalem's Shaarei Tsedek's Hospital, was well known to us. This event dramatically reemphasized that terrorists don't discriminate. They want "only" to exterminate the State and the People of Israel, no matter who you are, - it's enough of an excuse for them that you're Israeli - or rather quite bluntly: that you're a Jew or are friendly to the Jews thus becoming a "legitimate" target.
For over fifty years the State and the People of Israel have struggled for survival. In the last two years an increasing number of people have begun to understand that we don't fight only here for own physical survival. We fight against is Barbarism, Darkness, Evil and for Civilization. The difference between Civilization and civilizations/cultures is very simple: in a Civilized Society every single human life is valuable. So long as the mothers of Palestinian terrorists will express their joy at the news that their son has committed a homicidal bombing, killing indiscriminately, as seen on the media, our fight will go on. We will keep fighting for ourselves, our families and our people, but also for all civilized people who hope that the future of mankind will be a "human future", not a barbarian one.
Today is September 11th. For the last two years we are no longer alone in this fight.
As it has been the case for the past three years, the medical services of the state of Israel are coping quite adequately with waves after waves of terror attacks. We are probably once again at the beginning of one of these murderous waves. The coming days are going to be uneasy ones. The State of Israel is once again on full alert. But things are somehow different that in the past. The American intervention in Iraq and the continuous presence of the American and coalition forces there has shuffled dramatically the cards in the Middle East. The threat on the existence of the State of Israel has been considerably diminished, and the eventuality of a generalization of the conflict with the Palestinian terrorists to a global Arab-Israeli war is currently very low. What remains is the threat of daily terror and the threat of a "mega-terror" event.
What is the task of the Emergency Medical Volunteers? The current assessment is that there is no real probability of a general call-up in the coming weeks/months. However these events must remind us that we have to maintain our efforts to widen the pool of EMV volunteers, to screen and train more and more volunteers, and to check that our new operational procedures will run smoothly. By doing so we will also demonstrate to the Israeli people that we care, and are concerned, by our active involvement by what is happening. It may be a small thing to you but it sends a strong message. From now on, each of the upcoming EMV training courses will be given the name of a member of the Israeli medical services who became a victim to the terror of the last years; sadly the list is not a short one. Therefore the next course, due to begin on October 26, will be dedicated to the memory of Dr. David Appelbaum z"l.