[1] Natl Ctr Drug Res & Evaluat, Natl Inst Hlth, Pharmacoepidemiol Unit, Rome, Italy
[2] Natl Ctr Dis Prevent & Hlth Promot, Natl Inst Hlth, Rome, Italy
[3] Italian Med Agcy, Area Settore Ufficio, Rome, Italy
[4] Italian Med Agcy, Settore Hta, Rome, Italy