These terms may be used as synonyms in many situations, specially by non-native English-speakers. In some languages, the translation for guideline, guidance and protocol may refer to the concept of Clinical Practice Guidelines and thus be completely interchangeable. However, the terms may have slightly different meanings specially concerning the degree of legal-binding. In some countries a guideline has to be followed, otherwise some kind of sanctions may be the consequence (i.e. not reimbursement of a procedure). Guidance can be interpreted as “orientation”, i.e.