各位大神好！
    我用的是系统GMM估计方法，处理的动态面板数据，审稿意见问我是用的固定效应，还是随机效应？原话为“It is worth mentioning whether the panel data model used took a fixed effects, random effects or a standard mixed effects model into consideration in this context.”
    想请教大家，这个模型他是系统自带用的什么效应了？