[Dossier SALeM: a method for assessing the effectiveness of a public health program].

The SALeM (Surveillance for apprentices and minors at work) is the first dossier aimed at evaluating the effectiveness of a public health program in Italy. Here we describe the main results achieved and the main methodological difficulties faced during its gathering. Aim of the dossier was to collect and weigh up all the available evidence of effectiveness referred to the program of health surveillance of apprentices and minors at work in non risky environments, as it is planned by the Italian National Health System.