[1] LHU APSS, Hosp Rovereto, Med Direct, I-38068 Rovereto, Italy
[2] Univ York, Dept Econ & Related Studies, York YO10 5DD, N Yorkshire, England
[3] Univ Padua, Dept Econ & Management, Padua, Italy
[4] LHU APSS, Epidemiol Serv, I-38123 Trento, Italy
[5] LHU Ferrara Prov, Dept Radiol, Ferrara, Italy
[6] LHU Bozen Prov, Hosp Merano, Merano, Italy
[7] LHU Genova, Genoa, Italy
[8] LHU Ragusa, Ragusa, Italy
[9] LHU Lecce, Maglie, Italy
[10] Reg Hlth Author Umbria Reg, Dept Hlth Informat Syst, Perugia, Italy
[11] LHU Savona, Savona, Italy
[12] LHU Treviso, Treviso, Italy
[13] LHU 2 Lanciano Vasto Chieti, Governance Outpatient Serv, Chieti, Italy
[14] LHU Feltre, Feltre, Italy
[15] Hosp Potenza, Potenza, Italy
[16] LHU Viterbo, Hosp Viterbo, Rome, Italy
[17] Natl Agcy Reg Healthcare Serv, Rome, Italy