4. For the Church's part, important above all seems to be the work of the more organic investigation of the increasingly complex problems which the health care workers must face in theca context of a greater commitment to collaboration among groups and corresponding activities. Today there are many organisms which directly engage Christians in the health care sector: over and above the religious congregations and institutions, with their social health care structures, there are organizations of Catholic doctors, associations of paramedics, nurses, pharmacists, volunteer workers, diocesan and interdiocesan, national and international organisms which have sprung up to pursue the problems of medicine and health. A better coordination of all these organisms is required. In my discourse to Catholic doctors on 3 October 1982, 1 emphasized this neck: ''In order to do this, individual action is not sufficient. Collective, intelligent, well-planned, constant and generous work is required, and not only within the individual countries, but also on an international scale. Coordination on a world-wide level would, in fact, allow a better proclamation and a more effective defense of your faith, of your culture, of your Christian commitment in scientific research and in your profession" (Insegnamenti di Giovanni Paolo 11, V, 3 [1982] p. 674; L'Osservatore Romano in English, 25 October).