TY  - JOUR 
T1  - Child-care attendance and common morbidity: evidence of association in the literature and questions of design
JO  - Revista de Saúde Pública
A1  - Barros, Aluísio J. D.
SN  - 0034-8910
UL  - 10.1590/S0034-89101999000100013
VL  - 33 
Y1  - 1999
PB  - Brasil 
ER  -