[1] Hosp Univ Bellvitge, Barcelona, Spain
[2] Inst Nacl Salud Publ, Catedra Conacyt, Cuernavaca, Morelos, Mexico
[3] Inst Nacl Salud Publ, Ctr Invest Salud Poblac, Cuernavaca, Morelos, Mexico
[4] Univ Autonoma Mexico, Fac Med, Ctr Invest Poblac Polit & Salud, Mexico City, DF, Mexico
[5] Inst Mexicano Seguro Social, Unidad Invest Epidemiol & Serv Salud, Benito Juarez 31, Cuernavaca 62000, Morelos, Mexico
[6] Univ Calif Los Angeles, Dept Hlth Policy & Management, Los Angeles, CA USA
[7] Univ Calif Los Angeles, Kaiser Permanente Ctr Hlth Equ, Los Angeles, CA USA
[8] Fielding Sch Publ Hlth, Canc Prevent & Control Res Ctr, Los Angeles, CA USA
[9] Jonsson Comprehens Canc Ctr, Los Angeles, CA USA
[10] Ctr Med Nacl Siglo XXI, Unidad Invest Epidemiol & Serv Salud Area Envejec, Mexico City, DF, Mexico
[11] Univ Calif Riverside, Riverside Sch Med, Dept Social Med Populat & Publ Hlth, Riverside, CA 92521 USA
[12] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[13] Univ Washington, Sch Publ Hlth, Dept Epidemiol, Seattle, WA 98195 USA