[1] Univ Roma Tor Vergata, Dept Biomed & Prevent, Via Montpellier 1, I-00133 Rome, Italy
[2] Australian Catholic Univ, Fac Hlth Sci, Sch Nursing Midwifery & Paramed, Melbourne, Vic, Australia
[3] Univ Milano Bicocca, Sch Med & Surg, Monza, Italy
[4] Univ Milano Bicocca, Dept Med & Surg, Monza, Italy
[5] Univ Penn, Sch Nursing, Philadelphia, PA USA
[6] Australian Catholic Univ, Mary MacKillop Inst Hlth Res, Melbourne, Vic, Australia
[7] Int Ctr Selfcare Res, Melbourne, Australia
[8] Wroclaw Med Univ, Wroclaw, Poland