1 College of Nursing, Michigan State University, East Lansing, MI, USA. Electronic address: pdeka@msu.edu.
2 Department of Statistics and Probability, Michigan State University, East Lansing, MI, USA.
3 Department of Health, Medicine and Caring Sciences, Linkoping University, Linkoping, Sweden.
4 Physiotherapy in Motion. Multispeciality Research Group (PTinMOTION), Department of Physiotherapy, University of Valencia, Valencia, Spain; Department of Physiotherapy, University of Valencia, Valencia, Spain.
5 Department of Physiotherapy, University of Valencia, Valencia, Spain.
6 Physiotherapy in Motion. Multispeciality Research Group (PTinMOTION), Department of Physiotherapy, University of Valencia, Valencia, Spain.