[1] Lino Maestroni Fdn Palliat Med Res Inst, I-26100 Cremona, Italy
[2] Univ Turin, Dept Microbiol & Publ Hlth, Turin, Italy
[3] Mario Negri Inst Pharmacol Res, Lab Mother & Child Hlth, Milan, Italy
[4] Hosp Legnano, Palliat Care Unit, Legnano, Italy
[5] Osped San Giovanni Battista Torino, Palliat Care Unit, Turin, Italy
[6] Antea Fdn, Rome, Italy