[1] Univ Genoa, Dept Hlth Sci, Via Pastore 1, I-16132 Genoa, Italy
[2] Univ Pisa, Dept Clin & Expt Med, Pisa, Italy
[3] CRO Aviano Natl Canc Inst, Via F Gallini 2, I-22081 Aviano, Italy
[4] Italian Nurses Natl Social Secur Council ENPAPI, Via Farnese 3, I-00192 Rome, Italy
[5] Ctr Eccellenza Cultura & Ric Infermierist, Via G Cesare 78, I-00192 Rome, Italy
[6] McGill Univ, Ingram Sch Nursing, Montreal, PQ, Canada