This note shows that moment conditions originally proposed by Wooldridge (1
991) [Wooldridge, J.M., 1991. Multiplicative panel data models without the
strict exogeneity assumption. Working Paper 574, MIT, Department of Economi
cs] can be used for the consistent estimation of parameters in fixed effect
s count data models with endogenous regressors. (C) 2000 Elsevier Science S
.A. All rights reserved. JEL classification: C23; C25.