1. Department of Nursing, GRUPAC, University of La Rioja, Logroño, Spain
2. Department of Health, Medicine and Caring Sciences, Linkoping University, Linkoping, Sweden
3. Physiotherapy in Motion, Multispeciality Research Group (PTin MOTION), Department of Physiotherapy, University of Valencia, Valencia, Spain
4. College of Nursing, Michigan State University, East Lansing, MI, USA