“…Although in theory, it seems realistic to expect positive results from clinical pharmacy services and pharmaceutical care philosophy [27], in practice, they are difficult to prove on the basis of clinical evidence. Many interventions are hard to standardize, hence their outcome measures in trials too [9,15]. Yet, most studies have been conducted on small samples in single facilities, probably pushed by pharmacists to demonstrate the usefulness of their local services; thus, results are hardly extendable to other hospital settings by definition.…”