[1] IRCCS Ctr Riferimento Oncol CRO Aviano, Ist Ricovero & Cura Carattere Sci, Dept Clin & Expt Pain Med, I-33081 Aviano, Italy
[2] Ca Foscari Univ Venice, Dept Management, I-30100 Venice, Italy
[3] Univ Turin, Dept Management, I-10134 Turin, Italy
[4] Wroclaw Univ Econ & Business, Dept Finance, PL-53345 Wroclaw, Poland
[5] Ca Foscari Univ Venice, Dept Econ, I-30100 Venice, Italy
[6] Fdn Pascale, Ist Ricovero & Cura Carattere Sci IRCCS, Ist Nazl Tumori, Div Anesthesia & Pain Med, I-80131 Naples, Italy
[7] Univ Pavia, Dept Clin Diagnost & Pediat Sci, I-27100 Pavia, Italy
[8] IRCCS Policlin San Matteo Fdn, Ist Ricovero & Cura Carattere Sci, Gen Surg Dept, I-27100 Pavia, Italy
[9] Massachusetts Gen Hosp, Div Trauma Emergency Surg & Surg Crit Care, Boston, MA 02114 USA
[10] Harvard Med Sch, Boston, MA 02115 USA
[11] Univ Aquila, Dept Life Hlth & Environm Sci, I-67100 Laquila, Italy
[12] Univ Turin, Dept Publ Hlth Sci & Pediat, I-10126 Turin, Italy
[13] Hosp Latisana, Dept Pain Med, I-33053 Latisana, Italy
[14] Ist Ricovero & Cura Carattere Sci IRCCS, Osped Pediat Bambino Gesu, ARCO, Dept Anesthesia & Crit Care, I-00165 Rome, Italy