[1] Univ Autonoma Madrid, Dept Nursing, Fac Med, Madrid, Spain
[2] Ciber Epidemiol & Publ Hlth CIBERESP, Madrid, Spain
[3] Univ Lleida, Soc Hlth Educ & Culture Res Grp GESEC, Lleida, Spain
[4] Univ Lleida, Fac Nursing & Physiotherapy, Dept Nursing & Physiotherapy, St Montserrat Roig 2, Lleida 25008, Spain
[5] Biomed Res Inst IRB, Healthcare Res Grp GRECS, Lleida, Spain
[6] Univ Alicante, Dept Community Nursing Prevent Med & Publ Hlth &, Publ Hlth Res Grp, Alicante, Spain
[7] Inst Hlth Carlos III, Natl Hlth Sch, Madrid, Spain
[8] Univ Umea, Dept Clin Med & Publ Hlth, Epidemiol & Global Hlth Unit, Umea, Sweden