[1] Casa Sollievo Sofferenza Hosp, San Giovanni Rotondo, Italy
[2] Policlin Umberto 1, Rome, Italy
[3] Italian Coll Gen Practitioners, Bari, Italy
[4] Univ Naples Federico II, Naples, Italy
[5] ARNAS Garibaldi Hosp, Catania, Italy
[6] Univ Torino, Turin, Italy