[30 years of multicentre and collaborative projects].

A thirty years long story of Assistenza Infermieristica e Ricerca, of the research projects launched and of the research networks implemented, is the occasion for an assessment of results achieved and of the future strategies. The journal achieved in getting started several successful projects (a rather unique achievement for a research journal, not only at national level). Most projects were companion studies of clinical trials but also independent epidemiological studies and a clinical trial were organized and published. The most challenging aspect is the ability to keep networks "alive" and able to continue to make and propose research.