TY - JOUR A1 - Goldberg, M. A1 - Chastang, J.F. A1 - Leclerc, A. A1 - Zins, M. A1 - Bonenfant, S. A1 - Bugel, I. A1 - Kaniewski, N. A1 - Schmaus, A. A1 - Niedhammer, I. A1 - Piciotti, M. A1 - Chevalier, A. A1 - Godard, C. A1 - Imbernon, E. T1 - Socioeconomic, Demographic, Occupational, and Health Factors Associated with Participation in a Long-term Epidemiologic Survey: A Prospective Study of the French GAZEL Cohort and Its Target Population Y1 - 2001 DO - 10.1093/aje/154.4.373 JF - American Journal of Epidemiology VL - 154 IS - 4 SP - 373 EP - -384 ER -