1 Department of Nursing and Physiotherapy, University of Lleida, Lleida, Spain; Healthcare Research Group, IRB Lleida, Institute for Biomedical Research Dr. Pifarre Foundation, Lleida, Spain; Consolidated Research Group: Society, Health, Education and Culture, University of Lleida, Lleida, Spain.
2 Department of Nursing and Physiotherapy, University of Lleida, Lleida, Spain.
3 Department of Nursing and Physiotherapy, University of Lleida, Lleida, Spain; Healthcare Research Group, IRB Lleida, Institute for Biomedical Research Dr. Pifarre Foundation, Lleida, Spain. Electronic address: oriol.martinez@udl.cat.