IRCCS "Regina Elena" National Cancer Institute, Rome, RM, Italy
IRCCS "Fondazione G. Pascale" National Cancer Institute, Naples, Italy
South Valley University, Luxor, South Valley University, Egypt
Hunter Holmes McGuire VAMC, Richmond, Virginia, United States
Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
Boston Medical Group, Mexico City, Mexico
Boston Medical Group Colombia, Bogotá, Cundinamarca, Colombia
Odense University Hospital (OUH), Odense, Fyn, Denmark
G.Gennimatas Hospital, Thessaloniki, Greece
G.Gennimatas Hospital, Thessaloniki, Greece