Step 3 (development of evidence-based guidelines). Next, we started to develop evidence-based guidelines for allied healthcare. As physiotherapy is the most applied allied healthcare discipline in PD care, we first developed a guideline that targeted physiotherapy for PD. Conform international standards for guideline development, practice recommendations were developed based on the results of a systematic literature review, clinical expertise, and patient values. The recommendations were graded according to the level of evidence available [14]. The guideline was authorized and distributed by our national professional organisation for physiotherapy, the Royal Dutch Society for Physical Therapy (KNGF). Likewise, guidelines for speech and language therapy and for occupational therapy were developed, authorized, and distributed [15]. For other disciplines, for example, dieticians, the development of guidelines has recently started. The guidelines provide decision support for everyday clinical practice.