[1] Inst Nacl Cancerol INCan, Dept Res & Breast Tumors, Mexico City, DF, Mexico
[2] Tecnol Monterrey, Hosp Zambrano Hellion, Breast Canc Ctr, Monterrey, NL, Mexico
[3] Joven & Fuerte Program Care & Res Young Women Bre, Mexico City, DF, Mexico
[4] INCan UNAM, Unidad Epidemiol & Invest Biomed Canc, Mexico City, DF, Mexico
[5] Ctr Med Nacl Siglo XXI, Hosp Oncol, Dept Med Oncol, Unidad Med Alta Especialidad, Mexico City, DF, Mexico