How to Esttab SHOWING THE FIRST STAGE ONLY (Without Showing the Second Stage) with ivreg2?

Hi!
My question is how to use Esttab to show the first stage WITHOUT Showing the Second Stage with ivreg2?
The code:

eststo: ivreg2 logHumanR (total_inst=logem4), first savefirst savefprefix(a)
eststo: ivreg2 logHumanR lat_abst (total_inst=logem4), first savefirst savefprefix(b)
esttab a* b* using "try.tex"

I am exporting the table to Latex, but it shows the second stage first, then the first stage.

(Plus is there a smarter way to only show first stage without typing these a* b* (in our list it's longer c* d* e*) ?)

Best Regards,