[1] Ramon de la Fuente Muniz Natl Inst Psychiat, Global Mental Hlth Res Ctr, Calzada Mexico Xochimilco 101, Mexico City 14370, DF, Mexico
[2] Natl Canc Inst, Palliat Care Unit, Mexico City, DF, Mexico
[3] Univ Nacl Autonoma Mexico, Med Fac, Global Studies Seminar, Mexico City, DF, Mexico
[4] Morelos Childrens Hosp, Psychoonclol & Palliat Care Unit, Mexico City, DF, Mexico
[5] Univ Nacl Autonoma Mexico, Psychol Fac, Coordinat Training Ctr & Psychol Serv, Mexico City, DF, Mexico
[6] Ramon de la Fuente Muniz Natl Inst Psychiat, Subdirectorate Clin Res, Mexico City, DF, Mexico