[1] Univ Pavia, Policlin San Matteo, Serv Psiquiatr Diagnosi & Cura, IRCCS,Sez Psichiatria, I-27100 Pavia, Italy
[2] Azienda Osped Univ, Dipartimento Salute Mentale, Varese, Italy
[3] IRCCS, Policlin San Matteo, Serv Biometria Epidemiol Clin, I-27100 Pavia, Italy
[4] IRCCS, Policlin San Matteo, Div Cardiol, Pavia, Italy
[5] IRCCS, Policlin San Matteo, Div Cardiochirurg, Pavia, Italy