Before revision:  We provide a detailed theoretical analysis of multiple VMM estimators, including  based on kernel methods and neural networks , and provide appropriate conditions under which these estimators are consistent, asymptotically normal, and semiparametrically efficient in the full conditional moment model.
After revision:  We provide a detailed theoretical analysis of multiple VMM estimators, including based on kernel methods and neural nets , and provide appropriate conditions under which these estimators are consistent, asymptotically normal, and semiparametrically efficient in the full conditional moment model.