There are three basic models of cancer care in the literature, two of them derived from the world of the psychology , the Safer model [23] and the Andersen model [24], widely used in publications, and the third one coming from the medical general practice world, the Olesen model [25] developed in Denmark. Based on her publication we think is also worth to introduce a fourth model, the Walter model [26], a refinement of the Andersen model, that introduces the term “time interval” rather than delay.