[Clinical research in service of clinical medicine: Contexts, practice, methodology and theory of Paul Martinís "clinical proof" - part 3: Causally relevant elements of Martini's clinical proof and epistemological remarks].

In the third part of our quadripartite series on Paul Martini and his concept of clinical proof we shortly present the mostly procedural elements of his test of treatment. We discuss their causal conduciveness: what do they contribute to infer causality from effect? Finally we comment on some of Martini's epistemological assumptions and methodological decisions that underpin his method of proof.