TY  - BOOK
AU  - MacMahon, Brian,
AU  - Trichopoulos, Dimitrios.
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : principles and methods 
SN  - 9717470618
SN  - 2
PY  - 1996///;copyright 1996.46
CY  - Boston
PB  - Little, Brown
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Epidemiology.;Epidemiologic Methods.;Epidemiology
N1  - Includes bibliographical references (p. 303-331) and index; 5
ER  -