@base .
a , , ;
, , ;
"Canadian Medical Association journal." ;
;
;
"0008-4409" ;
;
"0008-4409" ;
;
"0008-4409" ;
"Canadian Medical Association journal." , "Canadian Medical Association journal" ;
.
a ;
.
a ;
"0008-4409" ;
.
.
a ;
"0008-4409" ;
.
"Canada" .
a ;
;
"20040609162900.0"^^ ;
;
.
a , ;
"Canadian Medical Association journal" .
a .