Annals of Epidemiology
Annals of Epidemiology > 1999 > 9 > 7 > 436-440
Annals of Epidemiology > 1999 > 9 > 7 > 408-418
Annals of Epidemiology > 1999 > 9 > 7 > 397-407
Annals of Epidemiology > 1999 > 9 > 7 > 424-435
Annals of Epidemiology > 1999 > 9 > 7 > 419-423