... culture of network, opinions of colleagues, and leadership); organisational (i.e., staff, capacities, and resources); and economical and political context (i.e., reg-ulations, policies, and financial ... added risk factors of LBP and NP, and judged all mentioned risk factors on their frequency and severity (step one). Based on the perceptio ns of theworking group, the most frequent and severe risk ... barriers and facili-tators for the process and implementation of a PE pro-gramme and classified them into 19 ca tegories (e.g.,resource availability, creation of an appropriate t eam, and sufficient...