TY  - JOUR 
T1  - Headache complaints associated with psychiatric comorbidity in a population-based sample
JO  - Brazilian Journal of Medical and Biological Research
A1  - Benseñor, I.M.
A1  - Tófoli, L.F.
A1  - Andrade, L.
SN  - 0100-879X
UL  - 10.1590/S0100-879X2003001000021
VL  - 36 
Y1  - 2003
PB  - Brasil 
ER  -