^aCancer Control Department, Paoli-Calmettes Institute

^bAix Marseille University, UMR_S912, IRD

^cINSERM, UMR912 (SESSTIM), Marseille, France

Correspondence to François Eisinger MD, PhD, Paoli-Calmettes Institute, 232 Bd Saint-Marguerite, 13009 Marseille, France Tel +33 0 491 22 35 41; fax +33 0 491 22 38 57; e-mail: [email protected]

Received February 16, 2015

Accepted February 18, 2015