st: how to do the overindetification test in -ivprobit with -mle- option?

[gjhxmu@sina.com]

Dear statalists,
I am estimate a probit model where one or more of the regressors are endogenously determined.
What is the siginificant difference between -twostep- and -mle- in -ivprobit- ?
If I use the -mle- option, how to do the overindetification test?

Thank you for any help!

Best regards,
Rose
 

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